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Progressive muscular atrophy

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This is a rare form of motor neurone disease (MND).

Progressive muscular atrophy results from a lesion of anterior horn cells. The presentation is with asymmetrical limb wasting and weakness progressing to a condition where lower motor neurone signs predominate.

PMA accounts for 2.5-11% of cases of MND. It is predominantly seen in males, with a male to female ratio ranging from 3 to 7.5 to 1. The median age of onset is of 68 years, which is older than that of ALS (amyotrophic lateral sclerosis) patients (1).

Reference

  1. Liewluck T, Saperstein DS. Progressive Muscular Atrophy. Neurol Clin. 2015 Nov;33(4):761-73.

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