Alcohol intolerance occurs when your body doesn't have the proper enzymes to break down (metabolize) the toxins in alcohol. This is caused by inherited (genetic) traits usually found in Asians.
Other ingredients commonly found in alcoholic beverages, especially in beer or wine, can cause intolerance reactions. These include:
In some cases, reactions can be triggered by an allergy to a grain such as corn, wheat or rye or to another substance contained in alcoholic beverages.
Rarely, severe pain after drinking alcohol is a sign of a more serious disorder, such as Hodgkin lymphoma.