Chronic allergic urticaria is called chronic allergic urticaria when it recurs for more than a month and a half, and the cause is caused by allergies. In terms of treatment, the first thing to do is to check the allergen test to clarify what exactly is causing the hives, whether it is eating a certain food or coming into contact with a certain substance that is causing the allergic reaction, and if the exact allergic factor is found, find a way to avoid it, and the hives will be cured. Secondly, we must give immunity regulation treatment, not just anti-allergic and anti-inflammatory treatment, but regular immunity regulation method, you can use subcutaneous injection of thymidine alpha 1 injection, once a week, 4-8 times in a row; also in this process, we must give certain anti-histamine and anti-inflammatory treatment, such as Olopatadine tablets, Lupatadine tablets, etc. If there is no hypertension, you can also take oral compound glycopyrrolate Tablets.