During an upright tilt, a person's cardiovascular system has to adjust in order to prevent a significant portion of the blood volume from pooling in the legs. These adjustments consist of a mild ...

Medically reviewed by Richard N. Fogoros, MD Key Takeaways Vasovagal syncope often happens when standing or sitting up ...

Syncope is a transient loss of consciousness and postural tone followed by spontaneous recovery without therapeutic intervention. It is a common clinical problem, the origins of which are often ...

Picture this: you’re standing in line at the grocery store when suddenly you feel dizzy, nauseous, and before you know it, you’re waking up on the floor with concerned strangers hovering over you. If ...

A syncope is the clinical name given to a brief blackout (visual greyout) or an episode of fainting or momentary collapse. It is triggered when the brain does not receive enough blood for a short ...

When the heart beats too fast or too slow, blood pressure can drop suddenly, reducing blood flow to the brain and causing a ...