Bell's palsy: Difference between revisions

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__NOTOC__
{{Infobox_Disease
{{Infobox_Disease
  | Name          = Bell's palsy
  | Name          = Bell's palsy
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  | OMIM          =  
  | OMIM          =  
  | MedlinePlus    = 000773
  | MedlinePlus    = 000773
| eMedicineSubj  =
| eMedicineTopic =
| eMedicine_plus =
  | MeshID        = D020330
  | MeshID        = D020330
}}
}}
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[[Bell's palsy medical therapy|Medical Therapy]]
[[Bell's palsy medical therapy|Medical Therapy]]
== Risk Stratification and Prognosis==
:*The House-Brackmann grading system was devised both as a clinical indicator of severity and also an objective record of progress.
:*Clinically incomplete lesions tend to recover.
:*The natural history without treatment was described in a study of 1011 patients in 1982:
::*67% had incomplete paralysis, with 94% rate of return to normal function
::*33% had complete paralysis, with 60% rate of return to normal function
::*By 3 weeks, 71% had complete recovery, 13% had slight sequelae , and 16% had residual weakness
:*Herpes zoster is associated with more severe paresis and worse prognosis compared with "idiopathic" Bell's palsy.
:*There is a favorable prognosis if some recovery is seen within the first 21 days of onset.
:*In severe lesions that recover, the outgrowth of new axons from the injury site may be disorganized and misdirected.
:*On blinking there is twitching of the angle of the mouth, and on smiling the eye may close or wink.
:*With misdirected autonomic fibers, a salivary stimulus may result in excess lacrimation, the syndrome of "crocodile tears."
:*Recurrent attacks of on either the ipsilateral or contralateral side have been observed in 7 to 15% of patients.
==References==
{{reflist|2}}


==Additional Resources==
==Additional Resources==

Revision as of 14:05, 22 August 2012

Bell's palsy
ICD-10 G51.0
ICD-9 351.0
DiseasesDB 1303
MedlinePlus 000773
MeSH D020330

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Editor-in-Chief: Gilbert Abou Dagher, M.D.

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Bell's palsy from other Diseases

Epidemiology and Demographics

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms | Physical Examination | Laboratory Findings | CT | MRI | Other Diagnostic Studies

Treatment

Medical Therapy

Additional Resources

  • Sullivan FM, Swan IRC, Donnan PT, et al. Early treatment with prednisolone or acyclovir in Bell's palsy. N Engl J Med 2007;357:1598-1607.
  • "The Merck Manual"
  • New England Journal of Medicine, Sept. 2004
  • Lambert, Michael. (2007-03-05) "Bell's Palsy." (Website.) Emedicine. Retrieved on 2007-09-27.

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Template:PNS diseases of the nervous system

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