Table 2. Chapel Hill consensus conference 2012 classification criteria.

ANCA: Anti-neutrophil cytoplasmic antibody.

Adapted from Chapel Hill Consensus Conference (CHCC) 2012 criteria [5].

Category	Description
Large vessel vasculitis	Takayasu arteritis Giant cell arteritis
Medium vessel vasculitis	Kawasaki disease Polyarteritis nodosa
Small vessel vasculitis	ANCA-associated vasculitis: Granulomatosis with polyangiitis (Wegener granulomatosis) Microscopic polyangiitis Eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome). Immune complex small-vessel vasculitis: anti-glomerular basement membrane disease Cryoglobulinemic vasculitis IgA vasculitis (Henoch-Schönlein) Hypocomplementemic urticarial vasculitis (anti-C1q vasculitis)
Variable-vessel vasculitis	Behcet's disease Cogan Syndrome
Single organ vasculitis	Cutaneous leukocytoclastic angiitis Cutaneous arteritis Primary central nervous system vasculitis Isolated aortitis Others
Vasculitis associated with systemic disease	Lupus vasculitis Rheumatoid vasculitis Sarcoid vasculitis Others
Vasculitis associated with probable etiology	Hepatitis C-associated cryoglobulinemic vasculitis Hepatitis B virus-associated vasculitis Syphilis-associated vasculitis Cancer-associated vasculitis Drug-associated vasculitis Others