Differentiating Polymyalgia rheumatica from other diseases: Difference between revisions

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{| class="wikitable"
{|
! rowspan="3" |Disease
! rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! colspan="9" |Symptoms
! rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! rowspan="3" |History
! colspan="12" style="background:#4479BA; color: #FFFFFF;" align="center" + |Symptoms
! rowspan="3" |Physical
! rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! rowspan="2" style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination  
Examination  
! colspan="4" |Diagnosis
! colspan="4" style="background:#4479BA; color: #FFFFFF;" align="center" + |Diagnosis
|-
|-
! rowspan="2" |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! colspan="2" |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! rowspan="2" |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! rowspan="2" |Muscle pain
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! rowspan="2" |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! rowspan="2" |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! rowspan="2" |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! rowspan="2" |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! rowspan="2" |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! rowspan="2" |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! rowspan="2" |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! rowspan="2" |Electromyogram
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
!Proximal
! rowspan="3" style="background:#DCDCDC;" align="center" + |Medication−induced
!DIstal
! style="background:#DCDCDC;" align="center" + |[[Corticosteroids]]<ref name="pmid24083177">{{cite journal |vauthors=Gupta A, Gupta Y |title=Glucocorticoid-induced myopathy: Pathophysiology, diagnosis, and treatment |journal=Indian J Endocrinol Metab |volume=17 |issue=5 |pages=913–6 |date=September 2013 |pmid=24083177 |pmc=3784879 |doi=10.4103/2230-8210.117215 |url=}}</ref>
|-
| style="background:#F5F5F5;" align="center" + |Variable
! colspan="16" |Medications
| style="background:#F5F5F5;" align="center" + |Proximal
|-
| style="background:#F5F5F5;" align="center" + |−
|Corticosteroids
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + | −
* Variable
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="left" + |
| -
* [[Central obesity]]
|<nowiki>-</nowiki>
|
* Central obesity
* Excessive [[sweating]]
* Excessive [[sweating]]
* [[Insomnia]]
* [[Insomnia]]
Line 167: Line 168:
* [[Infertility]] 
* [[Infertility]] 
* Psychological disturbances
* Psychological disturbances
|
| style="background:#F5F5F5;" align="left" + |
*+  History of medications
*Positive h/o medications
|
| style="background:#F5F5F5;" align="left" + |
* Facial and sphincter muscles usually are spared
* Facial and sphincter [[Muscle|muscles]] are usually spared
|
| style="background:#F5F5F5;" align="left" + |
* + ACTH Stimulation test
* Positive [[ACTH stimulation test]]
* 24-hour urine [[cortisol]]
* 24-hour urine [[cortisol]]
* Low dose [[dexamethasone]] suppression test
* Low dose [[dexamethasone suppression test]]
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="left" + |
|<nowiki>-</nowiki>
* Normal
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="left" + |
* Normal
| style="background:#F5F5F5;" align="left" + |
* Normal
|-
|-
|Statins
! style="background:#DCDCDC;" align="center" + |[[Statins]]<ref name="pmid22001973">{{cite journal |vauthors=Tomaszewski M, Stępień KM, Tomaszewska J, Czuczwar SJ |title=Statin-induced myopathies |journal=Pharmacol Rep |volume=63 |issue=4 |pages=859–66 |date=2011 |pmid=22001973 |doi= |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |60+
* 60+
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
| -
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-/+(rhabdomyolysis)</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−/+([[Rhabdomyolysis]])
| style="background:#F5F5F5;" align="left" + |
* N/A
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* Positive medication history
*Positive h/o medications
|
*H/o other medication use
* Tenderness
| style="background:#F5F5F5;" align="left" + |
* [[Tenderness]]
* Muscle aches
* Muscle aches
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑''' liver enzymes
* '''↑↑''' Liver enzymes
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* Necrosis
* [[Necrosis]]
* Degeneration, and regeneration of fibers
* Degeneration, and regeneration of fibers
* Phagocytic infiltration  
* Phagocytic infiltration  
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="left" + |
* Normal
|-
|-
|Alcohol
! style="background:#DCDCDC;" align="center" + |[[Alcohol]]<ref name="pmid11784353">{{cite journal |vauthors=Preedy VR, Adachi J, Ueno Y, Ahmed S, Mantle D, Mullatti N, Rajendram R, Peters TJ |title=Alcoholic skeletal muscle myopathy: definitions, features, contribution of neuropathy, impact and diagnosis |journal=Eur. J. Neurol. |volume=8 |issue=6 |pages=677–87 |date=November 2001 |pmid=11784353 |doi= |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |Variable
* Variable
| style="background:#F5F5F5;" align="center" + |Proximal
|     '''+'''
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | +/
|<nowiki>+/-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
* Swelling
| style="background:#F5F5F5;" align="left" + |
* [[Swelling]]
* Tender
* Tender
* Erythema and induration
* [[Erythema]] and induration
|
| style="background:#F5F5F5;" align="left" + |
* Alcohol intoxication
* [[Alcohol]] intoxication
|
| style="background:#F5F5F5;" align="left" + |
* Change in mental status
* Change in [[mental status]]
* Telangiectasia
* [[Telangiectasias|Telangiectasia]]
* Peripheral neuropathy
* [[Peripheral neuropathy]]
|
| style="background:#F5F5F5;" align="left" + |
*  nonspecific and are normal in many patients
* Monspecific and are normal in many patients
|
| style="background:#F5F5F5;" align="left" + |
* Normal or '''↑↑'''
* Normal or '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|-
|-
! colspan="16" |Endocrine
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
|Cushing's disease
! rowspan="6" style="background:#DCDCDC;" align="center" + |Endocrine
|
! style="background:#DCDCDC;" align="center" + |[[Cushing's disease]]<ref name="pmid25221399">{{cite journal |vauthors=Sharma V, Borah P, Basumatary LJ, Das M, Goswami M, Kayal AK |title=Myopathies of endocrine disorders: A prospective clinical and biochemical study |journal=Ann Indian Acad Neurol |volume=17 |issue=3 |pages=298–302 |date=July 2014 |pmid=25221399 |pmc=4162016 |doi=10.4103/0972-2327.138505 |url=}}</ref>
* 25 -45
| style="background:#F5F5F5;" align="center" + |25 −45
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
* Decreased libido
| style="background:#F5F5F5;" align="center" + |−
* Obesity/weight gain
| style="background:#F5F5F5;" align="left" + |
* Plethora
* [[Decreased libido]]
* [[Obesity]]/[[weight gain]]
* [[Plethora]]
* Round face
* Round face
* Menstrual changes
* Menstrual changes
* Hirsutism
* [[Hirsutism]]
* Hypertension
* [[Hypertension]]
* Ecchymoses
* [[Ecchymoses]]
* Lethargy, depression
* [[Lethargy]]
* [[Depression]]
* Dorsal fat pad
* Dorsal fat pad
* Abnormal glucose tolerance
* Abnormal glucose tolerance
|
| style="background:#F5F5F5;" align="left" + |
* N/A
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* Facial and sphincter muscles usually are spared
* Facial and sphincter [[muscles]] are usually spared
* Overweight
* [[Overweight]]
* Straie
* Straie
* Moon face
* [[Moon face]]
* HTN
* [[Hypertension|HTN]]
* Hyperpigmentation
* [[Hyperpigmentation]]
|
| style="background:#F5F5F5;" align="left" + |
* + ACTH Stimulation test
* Positive [[ACTH stimulation test]]
* 24-hour urine [[cortisol]]
* 24-hour urine [[cortisol]]
* Low dose [[dexamethasone]] suppression test
* Low dose [[Dexamethasone suppression test|dexamethasone <nowiki/>suppression test]]
|Normal
| style="background:#F5F5F5;" align="left" + |
|
* Normal
| style="background:#F5F5F5;" align="left" + |
* Atrophy of type 2 muscle fibers, especially type 2B
* Atrophy of type 2 muscle fibers, especially type 2B
|Normal
| style="background:#F5F5F5;" align="left" + |Normal
|-
|-
|Adrenal insufficiency
! style="background:#DCDCDC;" align="center" + |[[Adrenal insufficiency]]<ref name="pmid30656022">{{cite journal |vauthors=Ruff RL, Weissmann J |title=Endocrine myopathies |journal=Neurol Clin |volume=6 |issue=3 |pages=575–92 |date=August 1988 |pmid=3065602 |doi= |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |30−50 years
* 30-50 years
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
* Signs of glucocorticoid, mineralocorticoid, and, androgen deficiency.
| style="background:#F5F5F5;" align="left" + |
|
* Signs of [[glucocorticoid]], [[mineralocorticoid]], and, [[androgen]] deficiency
| style="background:#F5F5F5;" align="left" + |
* Signs of [[postural hypotension]]
* Signs of [[postural hypotension]]
* History of [[tuberculosis]]
* History of [[tuberculosis]]
* History of [[malignancy]]
* History of [[malignancy]]
* History of other [[autoimmune disease]]
* History of other [[autoimmune disease]]
|
| style="background:#F5F5F5;" align="left" + |
* Hypotension 
* [[Hypotension]] 
 
* [[Hyperpigmentation]] 
* Hyperpigmentation 
* Auricular−cartilage calcification 
 
* [[Vitiligo]]
* Auricular-cartilage calcification 
| style="background:#F5F5F5;" align="left" + |
 
* [[Electrolyte abnormalities]]
* Vitiligo
* [[Hypoglycemia]] 
|
| style="background:#F5F5F5;" align="left" + |
* Electrolyte abnormalities
 
* Hypoglycemia 
|
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|-
|-
|Hyperaldosteronism with myopathy 
! style="background:#DCDCDC;" align="center" + |[[Hyperaldosteronism]] with myopathy<ref name="pmid5037033">{{cite journal |vauthors=Sambrook MA, Heron JR, Aber GM |title=Myopathy in association with primary hyperaldosteronism |journal=J. Neurol. Neurosurg. Psychiatry |volume=35 |issue=2 |pages=202–7 |date=April 1972 |pmid=5037033 |pmc=494037 |doi= |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |50
* 50
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>distal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>


Rhabdomyolysis
[[Rhabdomyolysis]]
|
| style="background:#F5F5F5;" align="left" + |
* Palpitations
* [[Palpitations]]
* Hypertension
* [[Hypertension]]
|
| style="background:#F5F5F5;" align="left" + |
* Episodes of heart beats
* Episodes of [[Palpation|increased heart beats]]
|
| style="background:#F5F5F5;" align="left" + |
* Hyperpigmentation
* [[Hyperpigmentation]]
|
| style="background:#F5F5F5;" align="left" + |
* Hypokalemia
* [[Hypokalemia]]
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|-
|-
|Hyperthyroidism
! style="background:#DCDCDC;" align="center" + |[[Hyperthyroidism]]<ref name="pmid28746208">{{cite journal |vauthors=Li Q, Liu Y, Zhang Q, Tian H, Li J, Li S |title=Myopathy in hyperthyroidism as a consequence of rapid reduction of thyroid hormone: A case report |journal=Medicine (Baltimore) |volume=96 |issue=30 |pages=e7591 |date=July 2017 |pmid=28746208 |pmc=5627834 |doi=10.1097/MD.0000000000007591 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |40
* 40
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* Signs of hyperthyroidism  
| style="background:#F5F5F5;" align="left" + |
|
* Signs of [[hyperthyroidism]]
* Sweating
| style="background:#F5F5F5;" align="left" + |
* Tremor'
* H/o of [[weight loss]]
* H/o of weight loss
| style="background:#F5F5F5;" align="left" + |
|
* [[Sweating]]
* Sweating  
* [[Tremor]]
* Tremor'
* Neck swelling
* Swelling on neck examination
| style="background:#F5F5F5;" align="left" + |
|
* Decreased [[TSH]]
* Decreased TSH
| style="background:#F5F5F5;" align="left" + |
|
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* Non specific
* Non specific
|
| style="background:#F5F5F5;" align="left" + |
* Myotonic
* [[Myotonic]]
|-
|-
|Hypothyroidism
! style="background:#DCDCDC;" align="center" + |[[Hypothyroidism]]<ref name="pmid6627693">{{cite journal |vauthors=Khaleeli AA, Griffith DG, Edwards RH |title=The clinical presentation of hypothyroid myopathy and its relationship to abnormalities in structure and function of skeletal muscle |journal=Clin. Endocrinol. (Oxf) |volume=19 |issue=3 |pages=365–76 |date=September 1983 |pmid=6627693 |doi= |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |55
* >55
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
| -
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+ Rhabdomyolysis</nowiki>
| style="background:#F5F5F5;" align="center" + | +
|
| style="background:#F5F5F5;" align="center" + | + [[Rhabdomyolysis MRI|Rhabdomyolysis]]
*  Signs of hypothyroidism
| style="background:#F5F5F5;" align="left" + |
|
*  Signs of [[hypothyroidism]]
* H/o weight gain  
| style="background:#F5F5F5;" align="left" + |
|
* H/o [[weight gain]]
* Myoedema 
| style="background:#F5F5F5;" align="left" + |
* [[Myxedema|Myxoedema]] 
* Muscle pseudohypertrophy
* Muscle pseudohypertrophy
|
| style="background:#F5F5F5;" align="left" + |
* Increased TSH
* Increased [[TSH]]
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* Nonspecific 
* Nonspecific 
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|-
|-
|Diabetic infraction  
! style="background:#DCDCDC;" align="center" + |Diabetic infraction<ref name="pmid25932331">{{cite journal |vauthors=Horton WB, Taylor JS, Ragland TJ, Subauste AR |title=Diabetic muscle infarction: a systematic review |journal=BMJ Open Diabetes Res Care |volume=3 |issue=1 |pages=e000082 |date=2015 |pmid=25932331 |pmc=4410119 |doi=10.1136/bmjdrc-2015-000082 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |45 
* 45 
| style="background:#F5F5F5;" align="center" + |Proximal
| +
| style="background:#F5F5F5;" align="center" + | +
| -
| style="background:#F5F5F5;" align="center" + | +
| +
| style="background:#F5F5F5;" align="center" + |−
| +
| style="background:#F5F5F5;" align="center" + |−
| -
| style="background:#F5F5F5;" align="center" + | +
| +
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
| -
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | −
* Cramps  
| style="background:#F5F5F5;" align="left" + |
* Sudden onset of pain  
* [[Cramps]]
* Anterior thigh muscles are most commonly involved
* Sudden onset of [[pain]]
*
* Anterior thigh [[muscles]] are most commonly involved
|
| style="background:#F5F5F5;" align="left" + |
* H/O long standing diabetes
* H/O long standing [[diabetes]]
|
| style="background:#F5F5F5;" align="left" + |
* Swelling  
* [[Swelling]]
 
* [[Tenderness]]
* Tenderness
| style="background:#F5F5F5;" align="left" + |
|
* Elevated [[ESR]]
* Elevation of the erythrocyte sedimentation rate
* [[Leukocytosis]]
* Leukocytosis
| style="background:#F5F5F5;" align="left" + |
|
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Necrosis  
* [[Necrosis]]
* Edema
* [[Edema]]
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|-
|-
! colspan="16" |Inflammatory / Rheumatologic
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
|Dermatomyositis<ref name="pmid1658649">{{cite journal| author=Dalakas MC| title=Polymyositis, dermatomyositis and inclusion-body myositis. | journal=N Engl J Med | year= 1991 | volume= 325 | issue= 21 | pages= 1487-98 | pmid=1658649 | doi=10.1056/NEJM199111213252107 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1658649  }}</ref>
! rowspan="5" style="background:#DCDCDC;" align="center" + |Inflammatory/ Rheumatologic
|
! style="background:#DCDCDC;" align="center" + |[[Dermatomyositis]]<ref name="pmid1658649">{{cite journal| author=Dalakas MC| title=Polymyositis, dermatomyositis and inclusion-body myositis. | journal=N Engl J Med | year= 1991 | volume= 325 | issue= 21 | pages= 1487-98 | pmid=1658649 | doi=10.1056/NEJM199111213252107 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1658649  }}</ref>
* 40s-50s
| style="background:#F5F5F5;" align="center" + |40s−50s<br>Can affect children
* Can affect childreen
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | +
| -
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
| +
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + |−
| -
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |
* Rash  
| style="background:#F5F5F5;" align="left" + |
* Dyspnea  
* [[Rash]]
* Weight loss
* [[Dyspnea]]
* Cough   
* [[Weight loss]]
|
* [[Cough]]  
|
| style="background:#F5F5F5;" align="left" + |
* [[Viral infections]]
* [[Cancer]]
| style="background:#F5F5F5;" align="left" + |
* Heliotrope rash on face and hands  
* Heliotrope rash on face and hands  
* Telangectasia
* [[Telangiectasia]]
* Erythema  
* [[Erythema]]
* Mechanic's hands  
* Mechanic's hands  
* Gottron's sign ( violaceous scaly eruption )   
* [[Gottron's papules|Gottron's sign]] ( violaceous scaly eruption )   
| rowspan="2" |
| style="background:#F5F5F5;" align="left" + |
* '''↑↑''' ESR
* '''↑↑''' [[Erythrocyte sedimentation rate|ESR]]
* '''↑↑''' CRP
* '''↑↑''' [[C-reactive protein|CRP]]
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* Perimysial mononuclear infiltrate  
* Perimysial mononuclear infiltrate  
| rowspan="2" |
| rowspan="2" style="background:#F5F5F5;" align="left" + |
* Muscle inflammation and damage
* [[Myopathic]]
|-
|-
|Polymyositis<ref name="pmid16586492">{{cite journal| author=Dalakas MC| title=Polymyositis, dermatomyositis and inclusion-body myositis. | journal=N Engl J Med | year= 1991 | volume= 325 | issue= 21 | pages= 1487-98 | pmid=1658649 | doi=10.1056/NEJM199111213252107 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1658649  }}</ref>
! style="background:#DCDCDC;" align="center" + |[[Polymyositis]]<ref name="pmid16586492">{{cite journal| author=Dalakas MC| title=Polymyositis, dermatomyositis and inclusion-body myositis. | journal=N Engl J Med | year= 1991 | volume= 325 | issue= 21 | pages= 1487-98 | pmid=1658649 | doi=10.1056/NEJM199111213252107 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1658649  }}</ref>
|
| style="background:#F5F5F5;" align="center" + |> 18 years  
* > 18 years  
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | +
| -
| style="background:#F5F5F5;" align="center" + | +
| +
| style="background:#F5F5F5;" align="center" + | −
| +
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + |−
| -
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + | −
* Similar to dermatomyositis without mucous and skin involvement
| style="background:#F5F5F5;" align="left" + |
|
* Similar to [[dermatomyositis]] without [[mucous]] and [[skin]] involvement
| style="background:#F5F5F5;" align="left" + |
* N/A
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* N/A
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑''' [[Erythrocyte sedimentation rate|ESR]]
* '''↑↑''' [[C-reactive protein|CRP]]
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* Endomysial mononuclear infiltrate  
* Endomysial mononuclear infiltrate  
* Patchy necrosis  
* Patchy necrosis  
|-
|-
|Inclusion body myositis<ref name="pmid16586493">{{cite journal| author=Dalakas MC| title=Polymyositis, dermatomyositis and inclusion-body myositis. | journal=N Engl J Med | year= 1991 | volume= 325 | issue= 21 | pages= 1487-98 | pmid=1658649 | doi=10.1056/NEJM199111213252107 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1658649  }}</ref>
! style="background:#DCDCDC;" align="center" + |Inclusion body [[myositis]]<ref name="pmid16586493">{{cite journal| author=Dalakas MC| title=Polymyositis, dermatomyositis and inclusion-body myositis. | journal=N Engl J Med | year= 1991 | volume= 325 | issue= 21 | pages= 1487-98 | pmid=1658649 | doi=10.1056/NEJM199111213252107 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1658649  }}</ref>
|
| style="background:#F5F5F5;" align="center" + |50s  
* 50s  
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>distal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
| +
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="left" + |
|
* [[Dysphagia]]
|
* Asymmetric weakness
|
| style="background:#F5F5F5;" align="left" + |
* [[Retrovirus]] (most common)
| style="background:#F5F5F5;" align="left" + |
* N/A
| style="background:#F5F5F5;" align="left" + |
* Antibodies to cytoplasmic 5'−nucleotidase
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
|
* [[Inflammatory cells]]
* Invading [[muscle cells]]
* Vacuolar degeneration
* Inclusions or plaques
| style="background:#F5F5F5;" align="left" + |
* [[Neurogenic]]
|-
|-
|Fibomyalgia
! style="background:#DCDCDC;" align="center" + |[[Fibromyalgia]]<ref name="pmid27803417">{{cite journal |vauthors=Ohara N, Katada S, Yamada T, Mezaki N, Suzuki H, Suzuki A, Hanyu O, Yoneoka Y, Kawachi I, Shimohata T, Kakita A, Nishizawa M, Sone H |title=Fibromyalgia in a Patient with Cushing's Disease Accompanied by Central Hypothyroidism |journal=Intern. Med. |volume=55 |issue=21 |pages=3185–3190 |date=2016 |pmid=27803417 |pmc=5140872 |doi=10.2169/internalmedicine.55.5926 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |40−50s
* 40-50s
| style="background:#F5F5F5;" align="center" + |Generalized
|
| style="background:#F5F5F5;" align="center" + |−
+
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + | +
| -
| style="background:#F5F5F5;" align="center" + |−
| ++
| style="background:#F5F5F5;" align="center" + |−
| -
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="left" + |
* Anxiety or depression features
* [[Anxiety]] or depression features
* Fatigue  
* [[Fatigue]]
* Sleep disturbance  
* Sleep disturbance  
* Numbness  
* [[Numbness]]
* Muscle spasms  
* [[Muscle spasms]]
|
| style="background:#F5F5F5;" align="left" + |
* History of depressive disorder
* History of [[depression]]
|
| style="background:#F5F5F5;" align="left" + |
* Tenderness in the soft tissue anatomical location  
* [[Tenderness]] in the soft tissue anatomical location  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|-
|-
|Polymyalgia Rheumatica<ref name="pmid8948307">{{cite journal| author=Myklebust G, Gran JT| title=A prospective study of 287 patients with polymyalgia rheumatica and temporal arteritis: clinical and laboratory manifestations at onset of disease and at the time of diagnosis. | journal=Br J Rheumatol | year= 1996 | volume= 35 | issue= 11 | pages= 1161-8 | pmid=8948307 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8948307  }}</ref>
! style="background:#DCDCDC;" align="center" + |[[Polymyalgia rheumatica|Polymyalgia Rheumatica]]<ref name="pmid8948307">{{cite journal| author=Myklebust G, Gran JT| title=A prospective study of 287 patients with polymyalgia rheumatica and temporal arteritis: clinical and laboratory manifestations at onset of disease and at the time of diagnosis. | journal=Br J Rheumatol | year= 1996 | volume= 35 | issue= 11 | pages= 1161-8 | pmid=8948307 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8948307  }}</ref>
|
| style="background:#F5F5F5;" align="center" + |50s
* 50s
| style="background:#F5F5F5;" align="center" + |Diffuse
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | −
| +
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + |−
| -
| style="background:#F5F5F5;" align="center" + | +
|
| style="background:#F5F5F5;" align="center" + | −
* Weight loss  
| style="background:#F5F5F5;" align="left" + |
|
* [[Weight loss]]
* History of joints stiffness which is worse in the morning  
| style="background:#F5F5F5;" align="left" + |
|
* History of joints stiffness, worse in the morning  
| style="background:#F5F5F5;" align="left" + |
* Restricted shoulder motion  
* Restricted shoulder motion  
|
| style="background:#F5F5F5;" align="left" + |
* '''↑ CRP'''  
* '''↑↑''' [[Erythrocyte sedimentation rate|ESR]]
* '''↑ ESR'''
* '''↑↑''' [[C-reactive protein|CRP]]
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
|-
|-
! colspan="16" |Genetic
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
|Becker muscular dystrophy
! rowspan="5" style="background:#DCDCDC;" align="center" + |Genetic
|<13yrs
! style="background:#DCDCDC;" align="center" + |[[Becker's muscular dystrophy|Becker muscular dystrophy]]<ref name="pmid25037084">{{cite journal |vauthors=Flanigan KM |title=Duchenne and Becker muscular dystrophies |journal=Neurol Clin |volume=32 |issue=3 |pages=671–88, viii |date=August 2014 |pmid=25037084 |doi=10.1016/j.ncl.2014.05.002 |url=}}</ref>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<13yrs
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* Milder form of Duchenne
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
* Growth delay
| style="background:#F5F5F5;" align="left" + |
* Age of onset of symptoms is much delayed than duchenne
* Milder form of [[Duchenne muscular dystrophy|Duchenne]]
|
| style="background:#F5F5F5;" align="left" + |
|
* [[Growth delay]]
* Age of onset of symptoms is much delayed than [[Duchenne muscular dystrophy|duchenne]]
| style="background:#F5F5F5;" align="left" + |
* Positive Grower sign
| style="background:#F5F5F5;" align="left" + |
* Decreased amount of [[dystrophin]].
* Decreased amount of [[dystrophin]].
|
| style="background:#F5F5F5;" align="left" + |
* ↑↑  
* ↑↑  
| rowspan="2" |
| rowspan="2" style="background:#F5F5F5;" align="left" + |
** Muscle fibril degeneration, regeneration
** Muscle fibril degeneration, regeneration
** Isolated fiber hypertrophy
** Isolated fiber hypertrophy
** Muscle replacement with fat and connective tissue
** Muscle replacement with fat and connective tissue
| rowspan="2" |
| rowspan="2" style="background:#F5F5F5;" align="left" + |
* Myopathic changes
* [[Myopathic]]
|-
|-
|Duchenne muscular dystrophy
! style="background:#DCDCDC;" align="center" + |[[Duchenne muscular dystrophy]]<ref name="pmid250370842">{{cite journal |vauthors=Flanigan KM |title=Duchenne and Becker muscular dystrophies |journal=Neurol Clin |volume=32 |issue=3 |pages=671–88, viii |date=August 2014 |pmid=25037084 |doi=10.1016/j.ncl.2014.05.002 |url=}}</ref>
|<13 yrs
| style="background:#F5F5F5;" align="center" + |<13 yrs
| +
| style="background:#F5F5F5;" align="center" + | Proximal
| -
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
| -
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + | −
| style="background:#F5F5F5;" align="left" + |
* Calf psedohypertrophy
* Calf psedohypertrophy
 
* [[Cardiomyopathy]]
* Cardiomyopathy
* [[Kyphoscoliosis]]
 
* [[Cognitive impairment]]
* Kyphoscoliosis
| style="background:#F5F5F5;" align="left" + |
 
* Cognitive impairment
|
* Early onset
* Early onset
*
| style="background:#F5F5F5;" align="left" + |
|
* Positive Grower sign
* +Grower sign
| style="background:#F5F5F5;" align="left" + |
|
* Errors in the Xp21 gene.
* Errors in the Xp21 gene.
* Absence of [[dystrophin]].
* Absence of [[dystrophin]].
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|-
|-
|Limb-girdle muscular dystrophies
! style="background:#DCDCDC;" align="center" + |[[Limb-girdle muscular dystrophy|Limb−girdle muscular]] dystrophies<ref name="pmid18769252">{{cite journal |vauthors=Guglieri M, Straub V, Bushby K, Lochmüller H |title=Limb-girdle muscular dystrophies |journal=Curr. Opin. Neurol. |volume=21 |issue=5 |pages=576–84 |date=October 2008 |pmid=18769252 |doi=10.1097/WCO.0b013e32830efdc2 |url=}}</ref>
|<15 yrs
| style="background:#F5F5F5;" align="center" + |<15 yrs
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="left" + |
* Calf hypertrophy
* Calf hypertrophy
* Scapular winging
* Scapular winging
* Cardiomyopathy  
* [[Cardiomyopathy]]
* Cardiac arrhythmias
* [[Cardiac arrhythmia|Cardiac arrhythmias]]
* Respiratory muscle weakness
* Respiratory muscle weakness
|
| style="background:#F5F5F5;" align="left" + |
* Autosomal dominant
* [[Autosomal dominant]]
|
* Deterioration of ability to run/walk
*
| style="background:#F5F5F5;" align="left" + |
|
*[[Muscle weakness]] is generally symmetric 
* LMNA gene
| style="background:#F5F5F5;" align="left" + |
* [[LMNA]] gene
* CAV3 gene
* CAV3 gene
*
| style="background:#F5F5F5;" align="left" + |
|
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* [[Myopathic]]
|-
|-
|Myotonic dystrophy type 1
| style="background:#DCDCDC;" align="center" + |[[Myotonic dystrophy]]<ref name="pmid22995693">{{cite journal |vauthors=Udd B, Krahe R |title=The myotonic dystrophies: molecular, clinical, and therapeutic challenges |journal=Lancet Neurol |volume=11 |issue=10 |pages=891–905 |date=October 2012 |pmid=22995693 |doi=10.1016/S1474-4422(12)70204-1 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |<18 years
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>distal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | +
* Myotonia
| style="background:#F5F5F5;" align="center" + |−
* Cataracts
| style="background:#F5F5F5;" align="left" + |
* Diabetes mellitus
* [[Myotonia]]
* [[Cataracts]]
* [[Diabetes mellitus]]
* Frontal balding
* Frontal balding
* Cardiac arrhythmias
* Cardiac arrhythmias
* Cholecystitis
* [[Cholecystitis]]
* Pregnancy
* [[Pregnancy]]
* Eyelid ptosis  
* Eyelid [[ptosis]]
|
| style="background:#F5F5F5;" align="left" + |
|
* Positive family history
|
| style="background:#F5F5F5;" align="left" + |
|
* Muscles often contract and are unable to relax
|
| style="background:#F5F5F5;" align="left" + |
|
* Mutations in the [[DMPK]] gene
| style="background:#F5F5F5;" align="left" + |
* N/A
| style="background:#F5F5F5;" align="left" + |
* N/A
| style="background:#F5F5F5;" align="left" + |
* [[Myopathic]]
|-
| style="background:#DCDCDC;" align="center" + |[[Glycogen storage disease]]<ref name="pmid11957192">{{cite journal |vauthors=Kannourakis G |title=Glycogen storage disease |journal=Semin. Hematol. |volume=39 |issue=2 |pages=103–6 |date=April 2002 |pmid=11957192 |doi= |url=}}</ref>
| style="background:#F5F5F5;" align="center" + |Variable
| style="background:#F5F5F5;" align="center" + |Proximal
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + | −
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="left" + |
* [[Autosomal recessive|AR]]
* [[Fatigue|Faituge]]
* [[Hypoglycemia]]
| style="background:#F5F5F5;" align="left" + |
* [[Exercise intolerance]]
| style="background:#F5F5F5;" align="left" + |
* [[Hypotonia]]
* [[Hepatomegaly]]
| style="background:#F5F5F5;" align="left" + |
* [[Lactic acidosis]]
* Elevated liver enzymes
* [[Ketosis]]
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
| style="background:#F5F5F5;" align="left" + |
* Normal
| style="background:#F5F5F5;" align="left" + |
* Normal
|-
|-
! colspan="16" |Infectious
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
|Lyme disease
! rowspan="5" style="background:#DCDCDC;" align="center" + |Infectious
|Variable
! style="background:#DCDCDC;" align="center" + |[[Lyme disease]]<ref name="pmid2795056">{{cite journal |vauthors=Schoenen J, Sianard-Gainko J, Carpentier M, Reznik M |title=Myositis during Borrelia burgdorferi infection (Lyme disease) |journal=J. Neurol. Neurosurg. Psychiatry |volume=52 |issue=8 |pages=1002–5 |date=August 1989 |pmid=2795056 |pmc=1031843 |doi= |url=}}</ref>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal
| +
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
| +/-
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | +/
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + | −
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="left" + |
* Erythema Migrans
* Erythema Migrans
* Flu-like symptoms
* Flu−like symptoms
* [[Lyme arthritis]]
* [[Lyme arthritis]]
* [[Neurological]] manifestations
* [[Neurological]] manifestations
|
| style="background:#F5F5F5;" align="left" + |
* + Tick bite
* H/o tick bite
* Hiking/Tip
* Hiking trip
|
| style="background:#F5F5F5;" align="left" + |
* Target-like [[lesions]]
* Target−like [[lesions]]
* HSM
* HSM
|
| style="background:#F5F5F5;" align="left" + |
* Clinical diagnosis
* Clinical diagnosis
* +Serology
* +Serology
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|-
|-
|Infulenza
! style="background:#DCDCDC;" align="center" + |[[Influenza]]<ref name="pmid6687269">{{cite journal |vauthors=Bove KE, Hilton PK, Partin J, Farrell MK |title=Morphology of acute myopathy associated with influenza B infection |journal=Pediatr Pathol |volume=1 |issue=1 |pages=51–66 |date=1983 |pmid=6687269 |doi= |url=}}</ref>
|Variable
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | Proximal and Distal
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | +
| +
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | −
| +
| style="background:#F5F5F5;" align="center" + | +
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
* Fever
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* Malaise
| style="background:#F5F5F5;" align="left" + |
* Rhinorrhea  
* [[Fever]]
* Muscle pain worse with movement
* [[Malaise]]
|
* [[Rhinorrhea]]
*
* [[Muscle pain]] worse with movement
|
| style="background:#F5F5F5;" align="left" + |
*Cold weather
*H/o Ill contacts
| style="background:#F5F5F5;" align="left" + |
* Muscle weakness, tenderness, and swelling.
* Muscle weakness, tenderness, and swelling.
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑''' Liver enzymes
* '''↑↑''' Liver enzymes
* +PCR
* Positive PCR
|
| style="background:#F5F5F5;" align="left" + |
* '''↑↑'''
* '''↑↑'''
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|-
|-
|Polio
! style="background:#DCDCDC;" align="center" + |[[Polio]]<ref name="pmid15933355">{{cite journal |vauthors=Howard RS |title=Poliomyelitis and the postpolio syndrome |journal=BMJ |volume=330 |issue=7503 |pages=1314–8 |date=June 2005 |pmid=15933355 |pmc=558211 |doi=10.1136/bmj.330.7503.1314 |url=}}</ref>
|<5 yrs
| style="background:#F5F5F5;" align="center" + |<5 yrs
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
| -
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="left" + |
* Asymmetrical [[paralysis]]
* Asymmetrical [[paralysis]]
* [[Muscle atrophy]]
* [[Muscle atrophy]]
* [[Tremors]]
* [[Tremors]]
* [[Skeletal]] deformities
* [[Skeletal]] deformities
|
| style="background:#F5F5F5;" align="left" + |
|
* History of skipped immunization.
| style="background:#F5F5F5;" align="left" + |
* Normal  
* Normal  
* [[Meningeal signs]]
* [[Meningeal signs]]
* Asymmetrical flaccid paralysis
* Asymmetrical flaccid paralysis
* Pharyngeal paralysis
* Pharyngeal paralysis
|
| style="background:#F5F5F5;" align="left" + |
* Isolation from [[pharyngeal]]<nowiki/>secretions, CSF
* Isolation from [[pharyngeal]]<nowiki/>secretions, CSF
* +Serology
* Positive serology
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* Neurological pattern
* Neurological pattern
|-
|-
|Syphilis
! style="background:#DCDCDC;" align="center" + |[[Syphilis]]<ref name="pmid17235095">{{cite journal |vauthors=French P |title=Syphilis |journal=BMJ |volume=334 |issue=7585 |pages=143–7 |date=January 2007 |pmid=17235095 |pmc=1779891 |doi=10.1136/bmj.39085.518148.BE |url=}}</ref>
|Variable
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |Negative
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="center" + |−
| style="background:#F5F5F5;" align="left" + |
* [[Chancre]]
* [[Chancre]]
* Lymphadenopathy
* [[Lymphadenopathy]]
* Condylomata lata
* Condylomata lata
* Neuro syphilis
* [[Neurosyphilis|Neuro syphilis]]
* Cardiovascular syphilis
* Cardiovascular syphilis
|
| style="background:#F5F5F5;" align="left" + |
* History of risk factors (MSM, unprotected sex, multiple sex partners)
* History of risk factors (MSM, unprotected sex, multiple sex partners)
|
| style="background:#F5F5F5;" align="left" + |
* Non-tender [[chancre]] in primary syphilis.
* Non−tender [[chancre]] in primary syphilis.
* Followed by [[rash]]  
* Followed by [[rash]]  
* Generalized [[lymphadenopathy]] in secondary syphilis
* Generalized [[lymphadenopathy]] in secondary syphilis
|
| style="background:#F5F5F5;" align="left" + |
* Darkfield examinations
* Darkfield examinations
* VDRL
* VDRL
* RPR
* RPR
* [[FTA-ABS]]
* [[FTA-ABS|FTA−ABS]]
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|-
|-
|Pyomyositis
! style="background:#DCDCDC;" align="center" + |[[Pyomyositis]]<ref name="pmid15380499">{{cite journal |vauthors=Crum NF |title=Bacterial pyomyositis in the United States |journal=Am. J. Med. |volume=117 |issue=6 |pages=420–8 |date=September 2004 |pmid=15380499 |doi=10.1016/j.amjmed.2004.03.031 |url=}}</ref>
|Variable
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>+/-</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>Distal
|<nowiki>+/-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* Fever
| style="background:#F5F5F5;" align="center" + |−
* Malaise
| style="background:#F5F5F5;" align="left" + |
* Psoas abscess
* [[Fever]]
|
* [[Malaise]]
* Immunocopmprimised
* [[Psoas abscess]]
|
| style="background:#F5F5F5;" align="left" + |
* [[Immunocompromised]]
| style="background:#F5F5F5;" align="left" + |
** Muscles are painful, swollen, tender, and indurated.
** Muscles are painful, swollen, tender, and indurated.
** Depending on the site of involvement, it may mimic appendicitis (psoas muscle), septic arthritis of the hip (iliacus muscle), or epidural abscess (piriformis muscle).
** Depending on the site of involvement, it may mimic appendicitis (psoas muscle), septic arthritis of the hip (iliacus muscle), or epidural abscess (piriformis muscle).
|
| style="background:#F5F5F5;" align="left" + |
* Leukocytosis
* Leukocytosis
* Elevated ESR
* Elevated ESR
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|
| style="background:#F5F5F5;" align="left" + |
* -
* N/A
|-
|-
! colspan="16" |Neurologic
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
|ALS
! rowspan="4" style="background:#DCDCDC;" align="center" + |Neurologic
|
! style="background:#DCDCDC;" align="center" + |[[Amyotrophic lateral sclerosis|ALS]]<ref name="pmid26629397">{{cite journal |vauthors=Zarei S, Carr K, Reiley L, Diaz K, Guerra O, Altamirano PF, Pagani W, Lodin D, Orozco G, Chinea A |title=A comprehensive review of amyotrophic lateral sclerosis |journal=Surg Neurol Int |volume=6 |issue= |pages=171 |date=2015 |pmid=26629397 |pmc=4653353 |doi=10.4103/2152-7806.169561 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |>35
|
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>Distal
|
* Distal
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* Both upper and lower motor neuron signs 
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="left" + |
|
* [[Dysphagia]]
* [[Spasticity]]
* [[Hyperreflexia]]
* [[Babinski's sign|Babinski's]] +
| style="background:#F5F5F5;" align="left" + |
* N/A
| style="background:#F5F5F5;" align="left" + |
* Both [[Upper motor neurons|upper]] and [[lower motor neuron]] signs 
| style="background:#F5F5F5;" align="left" + |
* Clinical diagnosis
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Nonspecific findings of chronic denervation with reinnervation
* Nonspecific findings of chronic denervation with reinnervation
|
| style="background:#F5F5F5;" align="left" + |
* Neuropathic  
* Neuropathic  
|-
|-
|Stroke
! style="background:#DCDCDC;" align="center" + |[[Stroke]]<ref name="pmid20412000">{{cite journal |vauthors=Baldwin K, Orr S, Briand M, Piazza C, Veydt A, McCoy S |title=Acute ischemic stroke update |journal=Pharmacotherapy |volume=30 |issue=5 |pages=493–514 |date=May 2010 |pmid=20412000 |doi=10.1592/phco.30.5.493 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |>65
* >65
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>distal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
* Dysphagia
| style="background:#F5F5F5;" align="left" + |
* [[Dysphagia]]
* Unilateral/Bilateral weakness
* Unilateral/Bilateral weakness
|
| style="background:#F5F5F5;" align="left" + |
* H/o HTN, dyslipedemia DM
* H/o [[Hypertension|HTN]], [[dyslipidaemia]] [[Diabetes mellitus|DM]]
|
| style="background:#F5F5F5;" align="left" + |
* Weakness of the involved arm
* Weakness of the involved arm
*
| style="background:#F5F5F5;" align="left" + |
|
*Head CT
*
| style="background:#F5F5F5;" align="left" + |
|
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Neuropathic
* Neuropathic
|-
|-
|GBS
! style="background:#DCDCDC;" align="center" + |[[GBS]]<ref name="pmid23628447">{{cite journal |vauthors=van Doorn PA |title=Diagnosis, treatment and prognosis of Guillain-Barré syndrome (GBS) |journal=Presse Med |volume=42 |issue=6 Pt 2 |pages=e193–201 |date=June 2013 |pmid=23628447 |doi=10.1016/j.lpm.2013.02.328 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |18  −350
* 18  -350
| style="background:#F5F5F5;" align="center" + |Proximal
| -
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + | −
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
* Ascending paralysis
| style="background:#F5F5F5;" align="left" + |
|
* [[Ascending paralysis]]
* Precedes a gastrointestinal disease
| style="background:#F5F5F5;" align="left" + |
|
* Precedes a [[Gastrointestinal diseases|gastrointestinal disease]]
| style="background:#F5F5F5;" align="left" + |
* Weakness of lower extremities followed by upper extremities
* Weakness of lower extremities followed by upper extremities
|
| style="background:#F5F5F5;" align="left" + |
* Cytologic albumin ratio
* Cytologic albumin ratio
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Normal
* Normal
|
| style="background:#F5F5F5;" align="left" + |
* Neuropathic
* Neuropathic
|-
|-
|Multiple Sclerosis
! style="background:#DCDCDC;" align="center" + |[[Multiple sclerosis|Multiple Sclerosis]]<ref name="pmid22605909">{{cite journal |vauthors=Goldenberg MM |title=Multiple sclerosis review |journal=P T |volume=37 |issue=3 |pages=175–84 |date=March 2012 |pmid=22605909 |pmc=3351877 |doi= |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |30's
|
| style="background:#F5F5F5;" align="center" + |Proximal<br>&<br>distal
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="left" + |
|
* Ocular findings
|
* [[Urinary incontinence]]
|
* Problems with [[Speech and language pathology|speech]] or [[swallowing]]
|
| style="background:#F5F5F5;" align="left" + |
* Attacks or exacerbation
| style="background:#F5F5F5;" align="left" + |
** Localized weakness
** Focal sensory disturbances
** Hyper reactive reflexes
** Increased tone or stiffness
| style="background:#F5F5F5;" align="left" + |
* Head CT ologo−clonal bands
| style="background:#F5F5F5;" align="left" + |
* Normal
| style="background:#F5F5F5;" align="left" + |
* N/A
| style="background:#F5F5F5;" align="left" + |
* Neuropathic
|-
|-
! colspan="16" |Neuro-muscular
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Organ system
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Disease
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Age of onset
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle weakness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Fever
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myalgia
! style="background:#4479BA; color: #FFFFFF;" align="center" + |'''Contractures'''
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Gait abnormality
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Neuropathy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Atrophy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Stiffness
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Myoglobinuria
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Other features
! style="background:#4479BA; color: #FFFFFF;" align="center" + |History
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Physical
Examination
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Laboratory Findings
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Creatine Kinase
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Muscle Biopsy
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Electromyogram
|-
|-
|Botulisim
! rowspan="3" style="background:#DCDCDC;" align="center" + |Neuromuscular
|
! style="background:#DCDCDC;" align="center" + |[[Botulinum]]<ref name="pmid15257512">{{cite journal |vauthors=Cherington M |title=Botulism: update and review |journal=Semin Neurol |volume=24 |issue=2 |pages=155–63 |date=June 2004 |pmid=15257512 |doi=10.1055/s-2004-830901 |url=}}</ref>
|<nowiki>-</nowiki>
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Distal
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |
|
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* H/0 Food exposure and air
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="left" + |
|
* [[Double vision]]
|
* [[Blurred vision]]
|
* Drooping eyelids
|
* [[Slurred speech]]
* [[Difficulty swallowing]]
| style="background:#F5F5F5;" align="left" + |
* H/O food exposure
| rowspan="3" style="background:#F5F5F5;" align="left" + |
* [[Hyporeflexia]]
* Decreased strength
| style="background:#F5F5F5;" align="left" + |
* +Toxin
| rowspan="3" style="background:#F5F5F5;" align="left" + |
* Normal
| rowspan="3" style="background:#F5F5F5;" align="left" + |
* N/A
| rowspan="3" style="background:#F5F5F5;" align="left" + |
* Myopathic
|-
|-
|Lambert-Eaton myaes
! style="background:#DCDCDC;" align="center" + |[[Lambert-Eaton syndrome|Lambert−Eaton syndrome]]<ref name="pmid22094130">{{cite journal |vauthors=Titulaer MJ, Lang B, Verschuuren JJ |title=Lambert-Eaton myasthenic syndrome: from clinical characteristics to therapeutic strategies |journal=Lancet Neurol |volume=10 |issue=12 |pages=1098–107 |date=December 2011 |pmid=22094130 |doi=10.1016/S1474-4422(11)70245-9 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Distal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="center" + | +
|
| style="background:#F5F5F5;" align="center" + | +
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="left" + |
|
* Weakness of the bulbar muscles
|
* Ocular
|
* Limb weakness
|
| style="background:#F5F5F5;" align="left" + |
* Weaknessa is often relieved temporarily after exertion or physical exercise.
| style="background:#F5F5F5;" align="left" + |
* Antibodies against voltage−gated calcium channels 
|-
|-
|Myasthenia gravis
! style="background:#DCDCDC;" align="center" + |[[Myasthenia gravis]]<ref name="pmid23193443">{{cite journal |vauthors=Jayam Trouth A, Dabi A, Solieman N, Kurukumbi M, Kalyanam J |title=Myasthenia gravis: a review |journal=Autoimmune Dis |volume=2012 |issue= |pages=874680 |date=2012 |pmid=23193443 |pmc=3501798 |doi=10.1155/2012/874680 |url=}}</ref>
|
| style="background:#F5F5F5;" align="center" + |Variable
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |Proximal
|<nowiki>+</nowiki>
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + | −
|
| style="background:#F5F5F5;" align="center" + | +
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |−
|
| style="background:#F5F5F5;" align="center" + |<nowiki>+</nowiki>
* Ocular
| style="background:#F5F5F5;" align="center" + |
 
| style="background:#F5F5F5;" align="left" + |
* Bulbar 
* [[Ocular]]
 
* [[Bulbar]] 
* Limb weakness
* Limb weakness
* Isolated neck, limbs and respiratory weakness
* Isolated neck, limbs and respiratory weakness
|
| style="background:#F5F5F5;" align="left" + |
|
* Weakness often worsens with activity
|
| style="background:#F5F5F5;" align="left" + |
|
* Antibodies that block or destroy nicotinic [[acetylcholine receptors]] 
|
|
|-
! colspan="16" |Paraneoplastic
|-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|-
! colspan="16" |Metabolic
|-
|Glycogen storage disease
|
* Variable
|<nowiki>+</nowiki>
|<nowiki>-</nowiki>
|<nowiki>-</nowiki>
|<nowiki>-</nowiki>
|<nowiki>-</nowiki>
|<nowiki>-</nowiki>
|<nowiki>-</nowiki>
|
* AR
* Faituge
* Hypoglycemia
|
* Exercise intolerance
|
* Hypotonia
* Hepatomeagly
|
* Lactic acidosis
 
* Elevated liver enzymes
 
* [[Ketosis]]
|
* '''↑↑'''
|
* Normal
|
* Normal
|-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|}
|}



Revision as of 15:47, 8 May 2018

Polymyalgia Rheumatica Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Elsaiey, MBBCH [2]

Overview

Polymyalgia rheumatica (PMR) must be differentiated from other conditions such as late onset rheumatoid arthritis, polymyositis, dermatomyositis, fibromyalgia, and remitting seronegative symmetrical synovitis with pitting edema.

Differentiating Polymyalgia Rheumatica from other Diseases

PMR must be differentiated from the following conditions:

  • Rheumatoid arthritis: PMR and late onset rheumatoid arthritis (RA) can initially present with similar clinical features like synovitis. These patients are treated initially as PMR with glucocorticoids. RA treatment is started when there is no improvement or when it evolves into characteristic RA or when there is a persistently raised plasma viscosity.[1] [2]
  • Malignancy (such as myeloma): Patients with malignancy sometimes present with PMR like symptoms and have poor response to steroid therapy.[5] This is in fact paraneoplastic syndrome presenting as PMR.[6]
  • Fibromyalgia: Fibromyalgia occurs in age groups 20-50 years. Patients have characteristic tender points. Unlike PMR, the active phase proteins and ESR are normal.
  • Hypothyroidism: Patients with hypothyroidism muscle and joint pain and weakness similar to PMR. Delayed relaxation of deep tendon reflexes is seen in hypothyroidism with elevated TSH levels and low T4 levels.

Differentiating polymyalgia rheumatica on the basis of fatigue and chronic pain

Disease Differentiating signs and symptoms Diagnostic findings
Polymyalgia rheumatica
Fibromyalgia
  • All lab tests are normal
Rheumatoid arthritis
  • Markers of systemic inflammation (ESR, CRP) are typically elevated.
SLE
Chronic fatigue syndrome Fatigue plus 4 of the following symptoms:
  • Diagnosis of exclusions
  • Symptoms must present for more than 6 months
Spondyloarthritis
Osteoarthritis
  • Localized joint pain
  • Restricted to affect joints
  • Older at onset
  • X-ray of the involved joints demonstrate degenerative changes
Hypothyroidism
  • TSH is elevated and free T4 is low.
Myopathaies (polymyositis and dermatomyositis)
Neuropathy

Differentiating polymyalgia rheumatica from other causes of myopathy

Organ system Disease Symptoms History Physical

Examination

Diagnosis
Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Medication−induced Corticosteroids[8] Variable Proximal + +
  • Positive h/o medications
  • Facial and sphincter muscles are usually spared
  • Normal
  • Normal
  • Normal
Statins[9] 60+ Proximal + −/+(Rhabdomyolysis)
  • N/A
  • Positive h/o medications
  • H/o other medication use
  • ↑↑ Liver enzymes
  • ↑↑
  • Necrosis
  • Degeneration, and regeneration of fibers
  • Phagocytic infiltration
  • Normal
Alcohol[10] Variable Proximal + +/−
  • Monspecific and are normal in many patients
  • Normal or ↑↑
  • Normal
  • Normal
Organ system Disease Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features History Physical

Examination

Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Endocrine Cushing's disease[11] 25 −45 Proximal +
  • N/A
  • Normal
  • Atrophy of type 2 muscle fibers, especially type 2B
Normal
Adrenal insufficiency[12] 30−50 years Proximal + +
  • Normal
  • Normal
  • Normal
Hyperaldosteronism with myopathy[13] 50 Proximal
&
distal
+

Rhabdomyolysis

  • Normal
  • Normal
  • Normal
Hyperthyroidism[14] 40 Proximal + + +
  • ↑↑
  • Non specific
Hypothyroidism[15] 55 Proximal + + + + + Rhabdomyolysis
  • ↑↑
  • Nonspecific 
  • Normal
Diabetic infraction[16] 45  Proximal + + + +
  • Normal
  • Normal
Organ system Disease Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features History Physical

Examination

Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Inflammatory/ Rheumatologic Dermatomyositis[17] 40s−50s
Can affect children
Proximal + + +
  • ↑↑
  • Perimysial mononuclear infiltrate
Polymyositis[18] > 18 years Proximal + + +
  • N/A
  • N/A
  • ↑↑
  • Endomysial mononuclear infiltrate
  • Patchy necrosis
Inclusion body myositis[19] 50s Proximal
&
distal
  • N/A
  • Antibodies to cytoplasmic 5'−nucleotidase
  • ↑↑
Fibromyalgia[20] 40−50s Generalized +
  • Normal
  • Normal
  • Normal
  • Normal
Polymyalgia Rheumatica[21] 50s Diffuse + + +
  • History of joints stiffness, worse in the morning
  • Restricted shoulder motion
  • Normal
  • Normal
  • Normal
Organ system Disease Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features History Physical

Examination

Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Genetic Becker muscular dystrophy[22] <13yrs Proximal + + +
  • Positive Grower sign
  • ↑↑
    • Muscle fibril degeneration, regeneration
    • Isolated fiber hypertrophy
    • Muscle replacement with fat and connective tissue
Duchenne muscular dystrophy[23] <13 yrs Proximal + + +
  • Early onset
  • Positive Grower sign
  • ↑↑
Limb−girdle muscular dystrophies[24] <15 yrs Proximal + + + +
  • LMNA gene
  • CAV3 gene
  • ↑↑
  • N/A
Myotonic dystrophy[25] <18 years Proximal
&
distal
+ + +
  • Positive family history
  • Muscles often contract and are unable to relax
  • Mutations in the DMPK gene
  • N/A
  • N/A
Glycogen storage disease[26] Variable Proximal +
  • ↑↑
  • Normal
  • Normal
Organ system Disease Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features History Physical

Examination

Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Infectious Lyme disease[27] Variable Proximal + + +/− +
  • H/o tick bite
  • Hiking trip
  • Clinical diagnosis
  • +Serology
  • N/A
  • N/A
  • N/A
Influenza[28] Variable Proximal and Distal + + + +
  • Cold weather
  • H/o Ill contacts
  • Muscle weakness, tenderness, and swelling.
  • ↑↑ Liver enzymes
  • Positive PCR
  • ↑↑
  • N/A
  • N/A
Polio[29] <5 yrs Proximal + + +
  • History of skipped immunization.
  • Isolation from pharyngealsecretions, CSF
  • Positive serology
  • N/A
  • N/A
  • Neurological pattern
Syphilis[30] Variable Negative + +
  • History of risk factors (MSM, unprotected sex, multiple sex partners)
  • N/A
  • N/A
  • N/A
Pyomyositis[31] Variable Proximal
&
Distal
+ + +
    • Muscles are painful, swollen, tender, and indurated.
    • Depending on the site of involvement, it may mimic appendicitis (psoas muscle), septic arthritis of the hip (iliacus muscle), or epidural abscess (piriformis muscle).
  • Leukocytosis
  • Elevated ESR
  • N/A
  • N/A
  • N/A
Organ system Disease Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features History Physical

Examination

Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Neurologic ALS[32] >35 Proximal
&
Distal
  • Distal
+ + +
  • N/A
  • Clinical diagnosis
  • Normal
  • Nonspecific findings of chronic denervation with reinnervation
  • Neuropathic
Stroke[33] >65 Proximal
&
distal
+ + +
  • Weakness of the involved arm
  • Head CT
  • Normal
  • Normal
  • Neuropathic
GBS[34] 18 −350 Proximal + +
  • Weakness of lower extremities followed by upper extremities
  • Cytologic albumin ratio
  • Normal
  • Normal
  • Neuropathic
Multiple Sclerosis[35] 30's Proximal
&
distal
+ +
  • Attacks or exacerbation
    • Localized weakness
    • Focal sensory disturbances
    • Hyper reactive reflexes
    • Increased tone or stiffness
  • Head CT ologo−clonal bands
  • Normal
  • N/A
  • Neuropathic
Organ system Disease Age of onset Muscle weakness Fever Myalgia Contractures Gait abnormality Neuropathy Atrophy Stiffness Myoglobinuria Other features History Physical

Examination

Laboratory Findings Creatine Kinase Muscle Biopsy Electromyogram
Neuromuscular Botulinum[36] Variable Distal + +
  • H/O food exposure
  • +Toxin
  • Normal
  • N/A
  • Myopathic
Lambert−Eaton syndrome[37] Variable Distal + + +
  • Weakness of the bulbar muscles
  • Ocular
  • Limb weakness
  • Weaknessa is often relieved temporarily after exertion or physical exercise.
  • Antibodies against voltage−gated calcium channels 
Myasthenia gravis[38] Variable Proximal + + +
  • Ocular
  • Bulbar 
  • Limb weakness
  • Isolated neck, limbs and respiratory weakness
  • Weakness often worsens with activity

References

  1. Pease CT, Haugeberg G, Montague B; et al. (2009). "Polymyalgia rheumatica can be distinguished from late onset rheumatoid arthritis at baseline: results of a 5-yr prospective study". Rheumatology (Oxford). 48 (2): 123–7. doi:10.1093/rheumatology/ken343. PMID 18980958. Unknown parameter |month= ignored (help)
  2. Pease CT, Haugeberg G, Morgan AW, Montague B, Hensor EM, Bhakta BB (2005). "Diagnosing late onset rheumatoid arthritis, polymyalgia rheumatica, and temporal arteritis in patients presenting with polymyalgic symptoms. A prospective longterm evaluation". J. Rheumatol. 32 (6): 1043–6. PMID 15940765. Unknown parameter |month= ignored (help)
  3. Sørensen CD, Hansen LH, Hørslev-Petersen K (2010). "[Myositis as differential diagnosis in polymyalgia rheumatica]". Ugeskr. Laeg. (in Danish). 172 (42): 2899–900. PMID 21040663. Unknown parameter |month= ignored (help)
  4. Hopkinson ND, Shawe DJ, Gumpel JM (1991). "Polymyositis, not polymyalgia rheumatica". Ann. Rheum. Dis. 50 (5): 321–2. PMC 1004419. PMID 2042988. Unknown parameter |month= ignored (help)
  5. Manganelli P, Borghi L, Coruzzi P, Novarini A, Ambanelli U (1986). "[Paraneoplastic polymyalgia rheumatica. Case contribution]". Minerva Med. (in Italian). 77 (38): 1739–41. PMID 3774196. Unknown parameter |month= ignored (help)
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