Focal convulsions associated with subclinical measles infection.

A patient with focal convulsions of sudden onset had cerebrospinal pleocytosis and electroencephalographic evidence of a focal lesion in the right hemisphere. Except for fever, there was no clinical evidence of a viral infection. Measles antibodies were detected in the serum and CSF. The CSF abnormalities resolved, and the patient has been well for 4 years. This case is unusual because of the focal CNS involvement and the lack of any other clinical features of measles infection.