Clinical Neurological Society of America

Clinical Proceedings

Multifocal Motor Neuropathy

Published July 2026

A Rare, Treatable Immune-Mediated Disease

Multifocal motor neuropathy is a rare, immune mediated disease characterized by muscle weakness that preferentially affects distal upper limb muscles. Patients often experience difficulties with activities like drawing, buttoning shirts, and gripping objects, all of which require fine motor skills.

Expert panel

Kyle Ruffing, MD, FAAN (Chair) · Karissa Gable, MD, FAAN · Christina Mayville, MD · Mamatha Pasnoor, MD, FAAN · Irina Rozenfeld, DNP, APRN