Acute disseminated encephalomyelitis after accidental injection of a hog vaccine: Successful treatment with plasmapheresis

Acute disseminated encephalomyelitis, an inflammatory demyelinating disease of the central nervous system, can occur after viral infections or vaccina tions, We report the clinical and neuroimaging findings in a 52-year-old ma n in whom acute disseminated encephalomyelitis developed after accidental s elf-injection of an industrial hog vaccine. The protracted and progressive clinical course, despite high-dose parenteral corticosteroid therapy, was a ltered by aggressive plasmapheresis.