Feeling dizzy, lightheaded, or suddenly blacking out may seem harmless in some situations, but doctors say fainting can sometimes signal serious underlying health problems.

Fainting happens when your brain doesn’t get enough blood. Dehydration, shock, too much alcohol, and even anxiety can lead to fainting. If you think you’re about to faint, lie down or put your head ...

The ED evaluation of syncope necessitates obtaining a careful history to determine whether such causes as intoxication, sepsis, migraine, or seizure are likely. Physical examination will aid in ...

Also known as the "common faint," vasovagal syncope (pronounced vay-zoh-Vay-gul Sing-kuh-pee) results from an abnormal circulatory reflex and could be caused by a number of factors: Environment: The ...

Add Yahoo as a preferred source to see more of our stories on Google. If you’ve ever fainted, you know it can be a scary experience. Understanding why you fainted can help you manage your next spell ...

Add Yahoo as a preferred source to see more of our stories on Google. Where is a fainting couch when you need one? Michael C. Gray/From www.shutterstock.com Over one million Americans faint every year ...

Learn the signs of heat exhaustion, heat stroke, heat cramps and dehydration. Find prevention tips, treatment advice and ...

Dehydration can manifest as thirstiness, headaches, and dry skin. Drinking water, isotonic sports drinks, or skimmed milk are all ways to rehydrate. Dehydration is when there is an insufficient volume ...