The consequences of alcohol allergy include skin symptoms, respiratory symptoms and so on. 1. Skin symptoms: for allergic patients, the skin can appear localized skin redness, erythema, accompanied by obvious itching symptoms, if the patient excessive scratching of the skin, may also cause skin damage and bacterial infection. 2. Respiratory symptoms: allergy can cause laryngeal edema, causing hoarseness, coughing and other symptoms, and in severe cases, can cause respiratory distress. In severe cases, it can be life-threatening. For patients with alcohol allergy, it is recommended that they go to a regular hospital, under the guidance of the doctor to actively treat, but also to avoid re-exposure to alcohol.