Serum Sickness

Disorder	Vasculitis	Epidemiology/Etiology	Clinical/Laboratory Findings
Serum sickness	Small vessel vasculitis involving immunocomplex deposition in skin vessels	Children and adults Complication of treatment of rattlesnake envenomation with horse-or sheep-based antivenin	Fever, urticaria with vasculitis, arthralgia, GI pain with melena