Syncope (medicine)

Syncope is a sudden loss of consciousness, sometimes called fainting or passing out. This can happen when your body doesn't get enough blood flow to your brain. Your heart is like a pump that moves blood around your body, and your brain needs that blood to keep working properly.

Sometimes, things like standing up too quickly or holding your breath can cause syncope. Other times, it can be caused by health problems like heart problems, low blood sugar, or dehydration.

When someone faints or passes out, they fall to the ground because they are unconscious. They may also feel dizzy or lightheaded before passing out. After fainting, they'll usually wake up in a minute or two.

If someone does pass out, it's important to make sure they are safe and carefully help them lie down on their back when possible. You should call for help if someone doesn't wake up quickly or if they've injured themselves after fainting.

Doctors can help find out what's causing syncope and suggest ways to prevent it from happening again. They might do tests to look at your heart, blood pressure, or blood sugar levels. They may also offer advice about lifestyle changes or medications.