Monomelic Multifocal Neuropathy: An Unrecognized Electrophysiological Feature of Hereditary Neuropathy with Liability to Pressure Palsies in Childhood.

Hereditary neuropathy with liability to pressure palsies (HNPP) is well defined in adults, but its clinical and electrophysiological features in childhood have not been well characterized. We describe a case of HNPP in a child with the unique electrophysiological presentation, affecting only one upper extremity.