Sensory form of acute polyneuritis.

A patient presented with severe sensory loss and ataxia with total arreflexia, and elevation of CSF protein with pleocytosis. At autopsy there was extensive lymphocytic infiltration of nerves and posterior roots, sparing the anterior roots. Teased fiber preparation of nerve showed a demyelinating lesion. There were no abnormalities in the CNS. The condition appears to be an acute sensory polyneuritis bearing a close relationship to acute Guillain-Barré syndrome.