Most hives can be cured by themselves if they are kept away from allergens. Urticaria, commonly known as “rubella”, is a limited edema reaction that occurs when small blood vessels in the skin and mucous membranes dilate and permeability increases after the skin and mucous membranes come into contact with allergens. At present, the cause of urticaria is not completely clear, and many patients can not find the exact cause, many hot and cold stimuli, food, drugs, fur, dust, pollen and other factors may cause the disease. Therefore, each patient should strive to find the cause of the urticaria attack, and after away from the causative agent, it is possible to have a self-healing situation. For example, cold urticaria should pay attention to keep warm, acetylcholine urticaria to reduce exercise, sweating and emotional fluctuations, contact urticaria to reduce the chance of contact and so on. For patients with recurrent urticaria still need to receive treatment, the principle of treatment is to find and remove the cause of the disease, anti-allergic treatment. Currently the preferred drug is the second generation of H1 receptor antagonists, such as loratadine, cetirizine, etc., can also be used in conjunction with antihistamines such as phenylephrine. If symptoms such as itchy skin occur, please go to the hospital in time.