Allergy after drinking alcohol causes itchy body, first of all, should stop drinking, for allergy and itchy symptoms, can be alleviated by means of drugs, diet, different methods corresponding to the drugs, food are as follows: 1, stop drinking: alcohol allergy is generally related to the lack of acetaldehyde conversion enzyme in the body, often manifested as a whole body skin erythema, papules, wind-blown damage, accompanied by varying degrees of itching, after such discomfort should immediately stop drinking alcohol 2, drug treatment: under the guidance of a doctor, oral antihistamines, such as loratadine, paracetamol, cyproheptadine, etc., but also oral vitamin C, calcium gluconate tablets, etc., when itching is obvious can be applied externally some anti-itch cream, such as compound camphor cream, furnace glycolic lotion, etc.; 3, eat liquid food: drink more water, eat more liquid food such as milk, rice soup, etc., milk can protect Stomach mucosa, relieve the pressure of the stomach on the digestion of alcohol, drinking rice soup can replenish sugar and water, so that the stomach digestive capacity is enhanced, and also pay attention to avoid local skin scratching, hot water scalding, etc. After drinking alcohol allergy itch, if the symptoms are mild you can take the above methods, if there is no relief or the situation is serious it is recommended to send to the doctor immediately.