Usually alcohol allergies last 1-2 days if the symptoms are mild, but if the symptoms are severe, you need to seek medical attention. How long an alcohol allergy lasts depends on the severity of the patient’s condition; if the symptoms are mild, the symptoms will improve significantly in 1-2 days. However, some patients with more severe symptoms of alcohol allergy may experience itchy skin, red spots, flushing, and may experience chest tightness, panic attacks, and palpitations, which require prompt medical attention. If severe alcohol poisoning is not seen in time, it may lead to serious complications and endanger the patient’s life, for example, severe cases may have difficulty breathing due to laryngeal edema or experience a drop in blood pressure and anaphylactic shock. Normally, if you are allergic to alcohol, you should be careful not to touch alcohol or drink beverages containing alcohol to avoid causing symptoms of alcohol allergy.