The itchy skin after drinking alcohol belongs to alcohol allergy, which should be dealt with by general treatment and medication. 1. General treatment: For patients with alcohol allergy, they should avoid drinking again and drink more water to promote the metabolism of alcohol discharge. Itchy skin should not be scratched to avoid causing skin breakage and increasing the chance of infection. 2. Medication: patients can take oral antihistamines, such as loratadine, cetirizine, etc., with anti-allergic effect. It can also be used externally with glycerite lotion, which can improve the local itching symptoms. Medications need to be used under medical supervision. If symptoms such as laryngeal edema and dyspnea occur, you should seek medical treatment in time to avoid delaying the condition.