Syncope is the medical term for fainting. It happens when your brain doesn't get enough blood flow and you lose consciousness. Usually a slow heart rate causes a drop in blood pressure, which reduces blood flow to the brain. In most cases, you recover within seconds or minutes. A small number of people, mostly the elderly, have episodes of fainting.

If you have slurred speech, or have trouble moving an arm or a leg after fainting, call for emergency help right away. This may be a sign of stroke.

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Review Date: 11/19/2016  

Reviewed By: Steven D. Ehrlich, NMD, Solutions Acupuncture, a private practice specializing in complementary and alternative medicine, Phoenix, AZ. Review provided by VeriMed Healthcare Network. Also reviewed by the A.D.A.M Editorial team.

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