Isolated benign cerebral vasculitis.

A young woman south medical care for headache, nausea, and evolving focal neurologic signs. The CSF was normal; cerebral angiography showed segmental narrowing and irregularity of intraparenchymal arterioles. Isolated cerebral vasculitis was the clinical diagnosis made by careful exclusion; the illness reponded well to steroids and there was later angiographic evidence of healing.