Hypersensitivity vasculitis

Definition

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.

Also known as leukocytoclastic vasculitis — per MONDO

Also identified as

• DOID 9809 per MONDO
• ICD9 446.2 per MONDO
• ICD9 446.20 per MONDO
• ICD9 446.29 per MONDO
• NCIT C82863 per MONDO
• SCTID 60555002 per MONDO
• UMLS C2973529 per MONDO

Affected Organs