Vasculitis: check for systemic disease
However, there are different types of vasculitis histologically, and different causes.
The commonest type is leukocytoclastic vasculitis, often presenting as part of Henoch-Schonlein vasculitis where the lesions appear acrally on the ankles, feet and buttocks, and there may be abdominal pain and haematuria.
Henoch-Schonlein is seen most in children but this was a case in an adult with significant renal involvement. In vasculitis, always do a skin biopsy and check the urine for blood. The latter finding suggests systemic