Itchy face after drinking alcohol may be due to alcohol allergy or other skin diseases. 1. Alcohol allergy: is due to the lack of acetaldehyde converting enzyme in the body caused by an external skin allergy symptoms, caused by skin contact with alcohol or intake of alcohol. It leads to allergic symptoms such as erythema and itching of the skin after drinking alcohol. 2. Skin diseases: other skin diseases, such as rosacea, seborrheic dermatitis, etc., can be triggered by alcohol consumption and aggravated, will also cause face itching. Itchy face after drinking alcohol, it is recommended to avoid drinking alcohol, if necessary, go to the hospital dermatologist, under the guidance of the doctor medication, to avoid further aggravation of the symptoms.