A Case of Multifocal Motor Neuropathy with Conduction Block

J Korean Neurol Assoc > Volume 23(4); 2005 > Article

Journal of the Korean Neurological Association 2005;23(4): 571-574.

전도차단을 동반한 다초점운동신경병증 1예

이상수, 이성현 송명자

충북대학교 의과대학 신경과학교실, 송재활의학과a

A Case of Multifocal Motor Neuropathy with Conduction Block

Sang-Soo Lee

Department of Neurology, Chungbuk National University College of Medicine, Cheongju; Dr. Song's Rehabilitation Clinica, Cheongju, Korea

Abstract

Multifocal motor neuropathy with conduction block (MMN) is characterized by a slowly progressive, asymmetrical weakness of the limbs without sensory loss. A differential diagnosis from other motor neuropathies has become increasingly important as MMN has proven to be a treatable disorder. We present a 45-year-old man with longstanding weakness and atrophy of the hand muscles. Electrophysiological studies revealed a typical conduction block in the bilateral median and ulnar nerves. A cycle of intravenous immunoglobulin treatment apparently did not affect the symptoms.KeyWords:Multifocal motor neuropathy, Conduction block