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There are numerous causes of palpable purpura, such as autoimmune diseases, drug reactions, vaccinations, and infections.The most common infectious causes are N. gonorrhoeae, S. aureus, and N. meningitides, however palpable purpura has also been caused by Mycoplasma spp., Rickettsiae, Mycobacterium, and very rarely by Treponema pallidum, Brucella spp., Yersinia, Campylobacter, and Bartonella.
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.
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 ]
Once fully developed, the classic appearance is "non-blanching, palpable purpura". [6] [5] [7] This appears as deep red to purple spots that feel raised to the touch. Purpura refers to the red-purple discolored spots, while palpable implies that these spots can be felt as raised from the surrounding skin.
Purpura fulminans is rare and most commonly occurs in babies and small children [25] but can also be a rare manifestation in adults when it is associated with severe infections. [26] For example, Meningococcal septicaemia is complicated by purpura fulminans in 10–20% of cases among children. [27]
Thrombotic thrombocytopenic purpura (TTP) is a blood disorder that results in blood clots forming in small blood vessels throughout the body. [2] This results in a low platelet count , low red blood cells due to their breakdown , and often kidney , heart , and brain dysfunction. [ 1 ]
Although it causes fever, large palpable purpuric skin lesions, and edema, it is a harmless condition. AHEI's appearance is frequently similar to that of Henoch-Schönlein purpura. Because AHEI is a self-limiting disease, conservative treatment is common. [2] Snow described acute hemorrhagic edema of infancy in the United States in 1913.
Clinical features may include constitutional symptoms like fever, arthralgia, myalgia, loss of appetite, weight loss and fatigue.A variety of organs can be affected, which causes a wide range of symptoms such as cough, shortness of breath, hemoptysis (coughing up of blood), symptoms of kidney failure, skin manifestations (palpable purpura and livedo racemosa [1]), seizures or peripheral ...