MULTIFOCAL MOTOR NEUROPATHY WITH CONDUCTION BLOCK MISDIAGNOSED AS MULTIPLE ENTRAPMENT NEUROPATHIES

We describe a 58-year-old male with a few years history of multifocal weakness in the upper limbs with minimal to absent sensory complaints. He was diagnosed as having multiple compressive neuropathies, which r equired repeated decompressive surgeries. Electrodiagnostic studies pr ior to diagnosis were limited to a few nerves, evaluating only distal segments. Because of delay in making the diagnosis, his condition prog ressed, and possibly because of the unnecessary surgeries, he develope d atrophy in some muscles, which resulted in significant motor disabil ity. He was later diagnosed as having multifocal motor neuropathy with conduction block and has partially responded to intravenous immunoglo bulin therapy. (C) 1998 John Wiley & Sons, Inc.