Itchy arms after drinking alcohol is mainly due to cholinergic urticaria, alcohol allergy, hepatitis, etc., can be treated with medication, gastric lavage, etc. under the guidance of a doctor. 1. Cholinergic urticaria: cholinergic urticaria is mainly caused by exercise, eating spicy food, drinking alcohol, etc. Alcohol will lead to the patient’s body secretion of acetylcholine, and stimulate the skin, appearing after drinking alcohol arm itchy symptoms. Oral loratadine tablets, cetirizine hydrochloride tablets and other drugs. 2. Alcohol allergy: Alcohol allergy is mainly caused by drinking alcohol, due to the decomposition of ethanol after the acetaldehyde can not be further decomposition, which leads to the symptoms of itchy arms after drinking alcohol. Must immediately stop drinking, and timely medical care, oral loratadine, cetirizine and other antihistamines to ease the allergic reaction, serious cases need to wash the stomach. 3. Hepatitis: Hepatitis is mainly due to viral infections or long-term alcohol consumption, lesions can lead to toxic liver injury, but also lead to bile acid salt deposition, the symptoms of drinking arm itchy, can be under the guidance of the doctor orally liver tablets, lamivudine tablets and other drugs. Itchy arms after drinking alcohol should be combined with alcohol cessation during the treatment period, so as not to aggravate the condition. If the above situation occurs, it is recommended to go to the hospital in time to find out the cause, symptomatic treatment, the above drugs need to be used in accordance with medical advice.