Recurrent hives are called chronic hives if the history of the disease is more than six weeks, and regular medication must be taken as prescribed by the doctor. When taking oral antihistamines, the absence of a rash indicates that the medication is effective against hives and can be continued. Those with a long history of the disease need to be taken for a long time, at least 2-3 months, can be taken once a day, if the control is better, can be changed to every other day to take 1, every other day to take 1 still did not appear rash, can be changed to every two days to take 1, and so on, and so on, and gradually reduce the drug can help to reduce the recurrence of urticaria. At the same time, we need to actively search for the cause of the disease, such as avoiding contact with suspected allergens, avoiding hot and cold stimuli, and avoiding infections. If there are other diseases timely treatment, such as the thyroid system, rheumatoid immune disease may lead to the emergence of urticaria.