Table 1 Classification of systemic vasculitis

Small vessel

Granulomatosis with polyangiitis

Microscopic polyangiitis

Churg-Strauss syndrome

Henoch Schönlein purpura

Cryoglobulinaemic angiitis

Cutaneous leucocytoclastic vasculitis

Medium vessel

Polyarteritis nodosa

Kawasaki disease

Large vessel

Giant cell arteritis

Takayasu arteritis