Allergic vasculitis is a group of vasculitis diseases characterized by inflammation of a small vessel, small veins, capillaries and small arteries, particularly in post-capillary veins. Muscular artery is not involved, clinical manifestations of vascular lesions mainly in the skin, the skin vascular disease outside the organ lighter, more involving joints and kidneys, did not constitute a multi-organ dysfunction is not irreversible and life-threatening.
Allergic vasculitis is a relatively common disease, its pathology broken white cell vasculitis performance, there are skin lesions, there are a number of visceral injury. Varying severity of the disease, light skin lesions were only a few weeks may be the more serious cases, can have organ damage, and even life-threatening. Allergic vasculitis, also called small vessel vasculitis, vasculitis interleukin debris, allergic cutaneous vasculitis.
Acute stage of allergic vasculitis can keep several weeks, often leaving pigmentation after the disease subsided. Some patients may be recurrent, a few patients can into a chronic process, continuing for several months or years. Allergic vasculitis is a major pediatric disease, the majority occurred in the previous 7-year-old, but adults can also occur and even the elderly. Adults in almost every case have a rash, the trend of more necrosis. Joints may be involved in the performance of large and small joints (knee-ankle-joints affected children). The performance of the gastrointestinal tract than the rare child. Renal injury and children, but may occur more kidney failure, the course is more creep feed. Adults may be myocardial injury, while rare in children.