If you have no prior history of fainting and have fainted multiple times, your doctor will want to determine if an underlying medical condition is the cause. That's usually enough to restore adequate blood flow to the brain. Experience Our Care Find a Doctor for: A cool, quiet place is best. Warning signs You may be able to tell when someone is about to faint. Often it is a sign of a serious medical problem, such as seizure, serious blow to the head, concussion, heart attack, diabetic coma, epilepsy, or another condition.
If you've had a fainting episode, you can avoid it happening again by:
Fainting and Loss of Consciousness
This condition is considered a medical emergency. This site complies with the HONcode standard for trustworthy health information: Food allergies are overblown responses by the immune system to foods that aren't typically harmful - like eggs and peanuts. Inactivity can cause blood to settle in the lower parts of the body, reducing the amount of blood flowing into the brain. Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic. Physical examinationincluding orthostatic vital signs and carotid sinus massage.