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 ...

Vasovagal syncope is the most common type of fainting, a temporary loss of consciousness. It's a condition that happens when your blood pressure and heart rate suddenly drop, delivering less oxygen to ...

And now an update on the science of swooning. NPR's Jon Hamilton reports on evidence that fainting can be caused by a newly discovered pathway between the heart and the brain. JON HAMILTON, BYLINE: ...

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 ...

A mom-of-two was left terrified her heart would stop beating after a rare condition caused her to faint when she ate. Sarah ...