Reversible conduction failure in pharyngeal‐cervical‐brachial variant of guillain‐barré syndrome

Abstract

In two patients with the pharyngeal–cervical–brachial variant (PCB) of Guillain–Barré syndrome (GBS), low amplitude distal compound muscle action potentials and partial motor conduction blocks normalized without development of excessive temporal dispersion within 4 weeks. Sensory nerve action potentials significantly improved in amplitude or, when absent, rapidly became recordable at follow‐up. Besides axonal degeneration, PCB is characterized by reversible conduction failure in both motor and sensory fibers and is in the continuous spectrum of axonal GBS subtypes. Muscle Nerve, 2010