In recent years, Ms. Cao from Hubei, I will get allergic urticaria in spring. I bought some medicine myself before, but it doesn't seem to work this year. The doctor advised me to check allergens and have targeted treatment. Is it useful? How should I treat allergies? There may be two reasons why taking antiallergic drugs is not effective. First, the genetic constitution is related to the biography of tongji hospital and Liu Guanghui of Huazhong University of Science and Technology, and second, the living environment. For example, people who are allergic to pollen cannot avoid the environment with pollen, but they are allergic to dog hair and cat hair, but they often hug and make out as usual. Long-term exposure to allergens will make the "enemy" stronger, and the same dose of drugs will not be so effective. For patients taking allergic drugs, there are four common treatment methods, that is, increasing the dosage of drugs appropriately, changing the types of drugs, combining drugs or alternating drugs. But it should be noted that these methods must be used under the guidance of a doctor. Compared with taking medicine to relieve allergic symptoms, it is more important to go to the hospital for definite testing, find out allergens and avoid them in a targeted way, so that you can relieve symptoms with small doses of medicine, even without taking medicine, and easily prevent allergies. In recent years, Ms. Cao from Hubei, I will get allergic urticaria in spring. I bought some medicine myself before, but it doesn't seem to work this year. The doctor advised me to check allergens and have targeted treatment. Is it useful? How should I treat allergies?