Allergic purpura is an allergic disease, also known as allergic reactive disease. Allergic reactions are abnormalities of immune function. Allergic purpura is also like other allergic diseases, the cause is genetic allergy, allergen, but the key is the immune function is not normal. If the immune function returns to normal, the disease will not recur, and if the immune function continues to be normal, the disease will not recur. Allergens can be bacteria, parasites, food, drugs, mites, pollen, molds, etc. The symptoms are subcutaneous bleeding, pinpoint to bruises, pressure does not fade, no itching, often combined with kidney and gastrointestinal bleeding; bleeding points often start from the lower extremities, but also can be divided into mute strain class bluff: hi µ urgent posthumous Zizi base gastrointestinal bleeding with black stool, abdominal pain. Treatment of allergic purpura 1, hormones (prednisone, dexamethasone, hydrocodone, etc.) available in serious conditions such as intestinal bleeding, but in general do not use, because it will reduce immune function and serious side effects. Often after the dose is reduced and stopped, the disease will recur again. In order to smoothly reduce and stop the hormone, add to improve the immune function treatment, if necessary, add non-hormone temporary effective anti-allergy drugs. 2, free of tobacco and alcohol, tobacco and alcohol reduce immune function, someone in the family smoking to quit smoking, passive smoking also suffer. 3, Chinese medicine Wu Wei Zi, Fang Feng, Chai Hu, Cicada, Astragalus, Licorice, White Fructus, Forsythia, Xiao Thistle, 10 grams of each of the above plus 10 dates, decoction with water. Astragalus is used for urine with protein, and white foxglove, small thistle, motherwort, pu huang and artichoke are used for urine with red blood cells. 4, about 20 jujubes daily, Anluo blood, rutin tablets, vitamin C. 5, improve immune function: levamisole, inosine, chasteberry, astragalus, multi anti-methacin, etc., check allergens, desensitization. 6.Bed rest, regular urine check, regular follow-up by family members to get medication. 7.If necessary, add temporary effective anti-allergy drugs such as paracetamol, cyproheptadine, ketotifen, reserpine, mindi, etc. 8.Polymyxin injection can be used topically. 9, diet: if there is no bad food after eating, it is possible to eat. If there is aggravated after eating is allergic to food, do not eat temporarily, to be normalized immune function is not allergic, by then you can eat.