Urticaria all over the body should be an acute attack of urticaria, and the medication for this condition should be determined according to the specific condition. If there are a large number of wind clusters around the body, but only the symptoms of itchy skin, without chest tightness, dyspnea or foreign body sensation in the throat, you can apply antihistamines for symptomatic treatment of desensitization and anti-itching, for example, you can take oral loratadine tablets, azelastine hydrochloride tablets and levocetirizine hydrochloride tablets, etc. You can also take oral vitamin C and calcium to assist desensitization. It is important to pay attention to the diet and avoid animal protein diet, seafood, and spicy and stimulating foods. If oral antihistamines are not effective, and respiratory symptoms such as chest tightness and dyspnea, or gastrointestinal symptoms such as abdominal pain and diarrhea occur, you should go to a nearby hospital immediately to avoid the appearance of anaphylaxis due to allergy or other adverse consequences.