Questions come up from time to time from people who believe they may have an alcohol allergy. So I thought it might be helpful to provide an overview of alcohol allergies -- what they are, how to know if you might have one, and how to deal with them.

Let's face it -- if you overindulge in alcohol, whether it's all the time or just every now and then -- you're probably going to feel sick the next day. Pounding headache, nausea and shakiness are the classic symptoms of a hangover.

But some people...