Optic neuritis in cat scratch disease.

A patient with optic neuritis is described whose associated lymphadenopathy, cat exposure, and positive cat scratch antigen skin test suggested the diagnosis of cat scratch disease. Optic neuritis and other neurologic abnormalities, especially encephalopathy, may be associated with, or the presenting manifestation of, cat scratch disease. To our knowledge, this is the fourth case of cat scratch disease-related optic neuritis to be reported.