Hypersensitivity vasculities seen in
The term cutaneous vasculitis is defined broadly as inflammation of the blood vessels of the dermis. Due to its heterogeneity, cutaneous vasculitis has been described by a variety of terms including hypersensitivity vasculitis and cutaneous leukocytoclastic angiitis. The typical histopathologic feature of cutaneous vasculitis is the presence of vasculitis of small vessels. Postcapillary venules are the most commonly involved vessels; capillaries and aerioles may be involved less frequently. ( Harrison&;s principle of internal medicine,18th edition,pg no. 2798)
Capillaries
Aerioles
Post capillary venules
Medium sized vessels
Cardiovascular system