hangover

n.

Unpleasant physical effects following the heavy use of alcohol.

The most common reported characteristics of a hangover are feelings of extreme thirst, lethargy, nausea, sensitivity to sunlight and noise, and headache.

Medical term: veisalgia.

heartburn

n.

A painful burning sensation, usually centered in the middle of the chest near the sternum, caused by the reflux of acidic stomach fluids that enter the lower end of the esophagus.

Also called acid reflux, cardialgia, pyrosis.