disease caused by disruption of disease has basis in disruption of hypersensitivity hypersensitivity reaction disease hypersensitivity vasculitis A small vessel vasculitis affecting the skin and/or internal organs. It is characterized by the presence of neutrophils and fibrinoid necrosis in small arteries and venules. It may be idiopathic or the result of drug treatment, infections, food intake, collagen vascular disorders, inflammatory bowel disease, or cancer. DOID:9809 EFO:1000974 ICD10:D69.0 ICD10:M31.0 ICD9:446.2 ICD9:446.20 ICD9:446.29 MONDO:0006794 MedDRA:10020764 NCIT:C82863 SCTID:60555002 leukocytoclastic vasculitis type III hypersensitivity disease vasculitis