“Giving a second thought“: a case of multifocal motor neuropathy diagnosed as a spinal muscular atrophy seventeen years earlier: electrophysiological and clinical features and res…

Multifocal motor neuropathy (MMN) is an inflammatory, demyelinating neuropathy with predominantly multifocal motor signs not easy to discriminate from motor neuron disease, for example spinal muscular atrophy (SMA). MMN may be associated with high titers of serum IgM anti-GM1 antibodies. The diagnosis of MMN depends on electrophysiological studies demonstrating partial conduction blocks in one or more motor nerves in areas not prone to compression . Case report: a 56 year old female developed 18 years ago a slowly progressive, asymmetric weakness of the right forearm and hand without any muscular atrophy. 11 yea…