Observation of 38 cases of non-progressive coin collecting localized muscular atrophy in young people

Abstract

The author reports a group of diseases clinically different from amyotrophic lateral sclerosis, progressive spinal muscular atrophy and other muscular wasting diseases, named non-progressive localized muscular atrophy of hand and forearm in young people . The onset age is young people between 14 and 24 years old, which is one of the important characteristics of this disease. Most of the patients were male (37/38). The vast majority of patients had atrophy of one upper limb (33/38), 3 cases had symmetrical muscle atrophy of both upper limbs, and 2 cases had one side with greater atrophy than the other. Although it is characterized by muscle atrophy in one upper limb, electromyography examinations of corresponding parts on both sides mostly show neuronal