Dehydration is defined as the loss of body fluids hampering the normal body function. It is mainly caused by hot climate and ...

It's a combination of dehydration, electrolyte imbalance ... "if you pace yourself and stay hydrated." Alcohol intolerance is a reaction that happens quickly, often within minutes.

Nausea, headaches, and sensitivity to light and sound are all common symptoms of a hangover, and most of these will go away over time as the body works to process alcohol.