Acute motor axonal neuropathy--an atypical presentation.

Guillain-Barré syndrome, an autoimmune disorder of the peripheral nervous system, is divided into several subtypes according to clinico-pathologic findings and epidemiologic characteristics. A pure motor variant without involvement of the sensory nerves has been reported in rare cases. This report details the clinical, immunologic, and serial electrophysiologic findings of two patients with an acute, exclusively motor, axonal neuropathy.