Which patient groups have the highest prevalence of focal muscular atrophy (FMA)?

Updated: Feb 20, 2018
  • Author: Sridharan Ramaratnam, MD, MBBS; Chief Editor: Helmi L Lutsep, MD  more...
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Most conditions that cause FMA do not have any racial predilection. The geographic variations of some of these disorders probably reflect environmental conditions rather than genetic predisposition.

Bulbospinal muscular atrophy (an X-linked disorder) involves only males. Monomelic amyotrophy is more common in men. PPMA is more frequent in women.

Disorders such as polio and monomelic amyotrophy are more common in younger people.

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