Acute urticaria can recur if it is exposed to allergens again after cure. After recurrence should stop contact with allergens, and follow the doctor’s advice oral medication, serious cases, should immediately go to the hospital for consultation. 1. Stop contact with allergens: after removing the allergens from acute urticaria, some patients can be cured. Some patients are difficult to cure, after the recurrence, the cause is clear, should avoid contact with allergens, the cause is not clear, should stop contact, take all the suspected items. 2. Oral medication: commonly used drugs are cetirizine, diclofenac tadalafil, benadryl and other antihistamines. If the cause of the disease is clear and removed, and the oral antihistamines are ineffective, glucocorticoid drugs such as prednisone can be chosen to carry out the treatment. 3. To the hospital: if the patient appears shock, breathing difficulties, should immediately call the emergency telephone, or go to the hospital, under the guidance of the doctor standardized treatment. In life, acute urticaria patients should do a good job of skin moisturizing and care, when going out, should wear a mask, and do a good job of sun protection, so as not to induce the condition.