What classifies an alcohol allergy? what are the symptoms?

ETOH intollerance: Alcohol intolerance can cause a runny nose, red face, hives, headache, nausea, vomiting, low blood pressure and trigger an asthma attack.

Alcohol Allergy: Alcohol Allergy or Alcohol intolerance is reaction to ingredients in an alcoholic beverage. It can cause immediate, unpleasant reactions after drinking Alcohol. Symptoms: • Warm, red, itchy bumps on the skin (hives) • stuffy nose • Headaches • Nausea and vomiting • Heartburn • Diarrhea • Worsening of preexisting asthma. •Palpitations •Low blood pressure. Please see a Physician for these symptoms