A 67-year-old man presented with acute painful sensory loss, areflexia
, ataxia, urinary retention, and severe constipation and became unable
to walk within 2 weeks. He died suddenly 5 weeks after the onset of s
ymptoms. Autopsy revealed widespread inflammation of sensory and auton
omic ganglia with immunocytochemical evidence of a CD8(+) T cell-media
ted cytotoxic attack against ganglion neurons. This observation sugges
ts a novel pathogenetic mechanism of immune-mediated human ganglion ce
ll damage comparable to mechanisms operating in polymyositis.