Clinical–neurophysiological correlations in a series of patients with IgM-related neuropathy.

Highlights: [•] Polyneuropathy associated with IgM monoclonal gammopathy is an immune-mediated polyneuropathy clinically characterized by symmetrical, distal polyneuropathy with predominant sensory ataxia. [•] Many cases of IgM-related neuropathy with a clinical phenotype not fitting the classic sensory-ataxic form have been described in literature. [•] Present findings suggest that demyelinating abnormalities in nerve conduction studies are more often associated with classical forms while axonal impairment occurs more often in atypical phenotypes. [ABSTRACT FROM AUTHOR]