The treatment of allergy and itching caused by medication is mainly divided into general treatment and drug treatment. 1. General treatment: first of all, stop using the drug that causes allergy, and find other drugs that can replace the drug as much as possible, and secondly, drink a lot of water can help relieve the allergic symptoms caused by drug allergy, and at the same time, replenish the nutrition and pay more attention to rest. 2. Medication: Patients can take some anti-allergy drugs to relieve symptoms, such as loratadine, cetirizine, etc., and at the same time, you can rub some antipruritic drugs on the skin, such as glycerite, etc., to help stop itching. If the patient’s symptoms are serious, it may require systematic application of hormone therapy. Specific drugs should be used under the guidance of a physician to avoid unauthorized use of drugs. It is recommended that patients seek timely medical treatment to avoid delays.