Small Vessel Vasculitis Associated With Cocaine Use

We report a case of cocaine-induced small vessel vasculitis in a 51-year-old woman. We postulate that levamisole, an adulterant of cocaine, likely is the cause of this increase in cocaine-induced vasculitis. Based on a literature review, we suggest some helpful tests to differentiate cocaine-induced vasculitis from true autoimmune vasculitis in the setting of midline destructive nasal lesions.