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IgA vasculitis (HSP), previously known as Henoch–Schönlein purpura, is an autoimmune disease that most commonly affects children. In the skin, the disease causes palpable purpura (small, raised areas of bleeding underneath the skin), often with joint pain and abdominal pain .
287 Purpura and other hemorrhagic conditions. 287.0 Allergic purpura Henoch–Schönlein purpura; 287.3 Thrombocytopenia, primary 287.31 Immune thrombocytopenic purpura. Idiopathic thrombocytopenic purpura; 287.4 Thrombocytopenia, secondary; 287.9 Hemorrhagic conditions, unspec.
Purpura is one of the main characteristics of Acute hemorrhagic edema of infancy. Specialty: Dermatology: Symptoms: Purpura, edema, and fever [1] Usual onset: 4 months and 2 years of age. [1] Duration: 1–3 weeks. [1] Differential diagnosis: Henoch-Schönlein purpura [1]
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Purpura (/ ˈ p ɜːr p jʊər ə / [1]) is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. [ 2 ]
Henoch–Schönlein purpura (HSP) - Often considered a systemic form of IgA nephropathy, Henoch–Schönlein purpura (HSP) is a systemic small-vessel vasculitis that is characterized by deposition of IgA antibody immune complexes in different key areas throughout the body.
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Immune complex glomerulonephritis, as seen in Henoch-Schönlein purpura; this is an example of IgA involvement in a nephropathy. The reaction can take hours, days, or even weeks to develop, depending on whether or not there is immunological memory of the precipitating antigen. Typically, clinical features emerge a week following initial antigen ...