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 ...

Fainting at the sight of blood is common to many people and usually occurs without warning. Again, it is unrelated to fear or squeamishness; rather, it involves elaborate physiological mechanisms.

Fainting or blacking out, also known as syncope, is a temporary loss of consciousness due to insufficient blood flow to the brain. Dreamstime/TNS You may have heard that people who feel faint should ...

Many symptoms of hypertrophic cardiomyopathy (HCM) are mild, particularly in the early stages of the disease, so they may be easy to dismiss. Symptoms such as shortness of breath during exercise, ...

Add Yahoo as a preferred source to see more of our stories on Google. A sudden restriction of blood flow to the brain. That's how scientists have traditionally explained why people faint. But several ...

Dysautonomia is a broad term for conditions that range from fainting to more serious life threatening conditions. Some are quite common, and some are extremely rare. Dysautonomia is a nervous system ...

Fainting or blacking out, also known as syncope, is a temporary loss of consciousness due to insufficient blood flow to the brain. Elijah Behr, M.D., a cardiologist at Mayo Clinic Healthcare in London ...

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 ...