Alcohol allergies are not common, but most reactions may be caused by the content in the alcohol, including gluten, wheat, barley, sulphites, histamines, rye and hops. The correct term way to refer to alcohol allergy is alcohol intolerance, as stated by Mayo Clinic.
Common symptoms of alcohol intolerance include skin flushing and nasal congestion. This situation is caused by the body's inability to digest alcohol, which is a genetic condition. They best way to avoid cases of alcohol intolerance is to quit drinking, as noted by Healthline. Reactions may be worse, if a person drinks while taking certain medications. Some people may experience warm and blotchy skin, after taking alcohol.