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 ...

Sudden fainting may signal a dangerous heart rhythm disorder rather than low blood pressure, making prompt medical evaluation ...

Frequent fainting isn't always caused by weakness or dehydration. A neurologist explains the warning signs, possible causes, when blackouts may indicate a serious neurological or heart condition, and ...

The summer heat can increase the risk of dehydration as the body struggles to regulate its internal core temperature. Along with the major risks associated with dehydration, low blood pressure, and ...

You may have heard that people who feel faint should sit with their heads between their knees, but is that true? And how can you tell whether you or someone else who has fainted should go to the ...