Macrocytic anemia history and symptoms: Difference between revisions
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==Overview== | ==Overview== | ||
'''Macrocytosis''' is the enlargement of [[red blood cell]]s with near-constant [[haemoglobin]] concentration, and is defined by a [[mean corpuscular volume]] (MCV) of greater than 100 femtolitres (the precise criterion varies between laboratories). | '''Macrocytosis''' is the enlargement of [[red blood cell]]s with near-constant [[haemoglobin]] concentration, and is defined by a [[mean corpuscular volume]] (MCV) of greater than 100 femtolitres (the precise criterion varies between laboratories). | ||
==History and Symptoms== | |||
*The major manifestations of Folate or B12 deficiency are related to the anemia and gastrointestinal dysfunction. Only B12 deficiency causes neurologic dysfunction. Constitutional symptoms related to anemia such as fatigue, dyspnea, lightheadedess, and anorexia occur. High output cardiac failure and angina are also consequences. | |||
Symptoms mostly related to GI mucosal abnormalities. Tend to be worse in folate rather than B12 deficiency. [[Diarrhea]], [[cheilosis]] and [[glossitis]] can be noted. | |||
*The classic picture of B12 deficiency is subacute combined degeneration of the dorsal columns. Specific for B12 deficiency, the patient will present with a broad based gait, ataxic, irritable, forgetful with numbness or paresthesias. Rhomberg and Babinski’s can be noted. Dementia may progress to frank “Megaloblastic Madness”. Remember, hematological abnormalities can occur without neurologic manifestations in B12 deficiency. | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} |
Revision as of 14:43, 21 September 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Macrocytosis is the enlargement of red blood cells with near-constant haemoglobin concentration, and is defined by a mean corpuscular volume (MCV) of greater than 100 femtolitres (the precise criterion varies between laboratories).
History and Symptoms
- The major manifestations of Folate or B12 deficiency are related to the anemia and gastrointestinal dysfunction. Only B12 deficiency causes neurologic dysfunction. Constitutional symptoms related to anemia such as fatigue, dyspnea, lightheadedess, and anorexia occur. High output cardiac failure and angina are also consequences.
Symptoms mostly related to GI mucosal abnormalities. Tend to be worse in folate rather than B12 deficiency. Diarrhea, cheilosis and glossitis can be noted.
- The classic picture of B12 deficiency is subacute combined degeneration of the dorsal columns. Specific for B12 deficiency, the patient will present with a broad based gait, ataxic, irritable, forgetful with numbness or paresthesias. Rhomberg and Babinski’s can be noted. Dementia may progress to frank “Megaloblastic Madness”. Remember, hematological abnormalities can occur without neurologic manifestations in B12 deficiency.
References
gl:Anemia megaloblástica he:אנמיה מגלובלסטית it:Anemia megaloblastica sl:Megaloblastna anemija sr:Мегалобластна анемија