the considerations in differential diagnosis include periarteritis nodosa , leukocytoclastic angiitis ( hypersensitivity angiitis , schonlein-henoch purpura , other disease-associated vasculitis ) , wegener 's granulomatosis , allergic granulomatosis ( granulomatous angiitis ) , and giant cell arteritis .
C0031036
periarteritis nodosa
C0042384
vasculitis