Fainting (known medically as syncope) is a sudden loss of consciousness and collapse due to temporary lack of blood flow to the brain. Fainting is always an emergency, but the most common conditions ...

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

In the case of my latest fainting spell, three doctors who evaluated me have suggested three different reasons (i.e. vasovagal, orthostatic, or postural). I could have been dehydrated from the ...