I've heard of vasculitis, but not cerebral vasculitis. I never thought about it, but since the brain has blood vessels, obviously, they can become inflamed.
Has research been done on causes for primary CNS vasculitis? I'd like to know what causes it, even if it is considered to be rare. I can, however, easily see how cocaine use can cause it, since it constricts blood vessels. One more reason to "just say no."