hypersensitivity vasculitis


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Related to hypersensitivity vasculitis: polyarteritis nodosa, hypersensitivity reactions

vasculitis

 [vas″ku-li´tis]
inflammation of a blood or lymph vessel; see arteritis, lymphangitis, and phlebitis. Called also angiitis.
Churg-Strauss vasculitis churg-strauss syndrome.
hypersensitivity vasculitis a group of systemic necrotizing vasculitides thought to represent hypersensitivity to an antigenic stimulus, such as a drug, infectious agent, or exogenous or endogenous protein; all disorders in this group involve the small vessels.
necrotizing vasculitis see systemic necrotizing vasculitis.
nodular vasculitis a chronic vasculitis of unknown etiology found predominantly below the knees, especially on the calves in young and middle-aged women, characterized by the presence of painful, reddish blue nodular lesions that may ulcerate, leaving scars, or resorb, leaving atrophic depressions. In the late stages, there is replacement of the subcutaneous fat by fibrosis and atrophy (wucher atrophy).
systemic necrotizing vasculitis any of a group of disorders characterized by inflammation and necrosis of blood vessels, occurring in a broad spectrum of cutaneous and systemic disorders. It includes Churg-Strauss syndrome, polyarteritis nodosa, the various kinds of hypersensitivity vasculitis, and other conditions. Called also necrotizing vasculitis.

cu·ta·ne·ous vas·cu·li·tis

an acute form of vasculitis that may affect the skin only, but also may involve other organs, with a polymorphonuclear infiltrate in the walls of and surrounding small (dermal) vessels. Nuclear fragments are formed by karyorrhexis of the neutrophils.
See also: leukocytoclastic vasculitis.

hypersensitivity vasculitis

Allergic vasculitis Immunology An immune dysfunction and systemic vasculitis characterized by small vessel involvement of the skin–accompanied by palpable purpura, leukocytoclastic inflammation, often also of the GI tract and kidney; HV may be associated with a drug reaction, bacterial infection, or underlying malignancy. See Vasculitis.
References in periodicals archive ?
The list of differential diagnosis is exhaustive and some important ones include hypersensitivity vasculitis (leukocytoclastic vasculitis), Henoch-Schonlein purpura, clotting factor deficiencies, disseminated intravascular coagulation, hematologic malignancies (e.
inflammatory vasculitis (leucocytoclastic vasculitis), (5) polyarteritis nodosa (PAN), Henoch-Schonlein purpura, drug-related hypersensitivity vasculitis, temporal arteritis/polymyalgia rheumatic and nonspecific unclassified vasculitis) and
Vasculitis involving the small vasculature includes Henoch-Schonlein purpura, essential cryoglobulinemia, hypersensitivity vasculitis, vasculitis secondary to an autoimmune connective tissue disease, vasculitis secondary to viral infection, and vasculitis associated with antineutrophil cytoplasmic antibodies (ANCA), including Wegener's granulomatosis, (3, 4) Churg-Strauss granulomatosis, (2, 5, 6) microscopic polyangiitis (MPA), (7, 8) and the renal limited form of MPA sometimes known as pauci-immune glomerulonephritis or idiopathic crescentic glomerulonephritis.