What happens to your body when you faint?
A drop in blood flow to the brain causes fainting. In these cases, you faint because of: The vasovagal reflex, which causes the heart rate to slow and the blood vessels to widen, or dilate. This reflex can be triggered by many things, including stress, pain, fear, coughing, holding your breath, and urinating.
How do you faint?
If you think you’re going to faint, you can try to stop it by taking these steps:
- If possible, lie down.
- Sit down with your head lowered forward between your knees.
- Don’t let yourself get dehydrated.
- Keep blood circulating.
- Avoid overheated, cramped, or stuffy environments, whenever possible.
What does it feel like to wake up from fainting?
Fainting caused by the vasovagal reflex is often easy to predict. Some people know they are going to faint because they have symptoms beforehand, such as feeling weak, nauseated, hot, or dizzy. After they wake up, they may feel confused, dizzy, or ill for a while.
What to do after fainting?
Position the person on his or her back.
If there are no injuries and the person is breathing, raise the person’s legs above heart level — about 12 inches (30 centimeters) — if possible. Loosen belts, collars or other constrictive clothing. To reduce the chance of fainting again, don’t get the person up too quickly.
What is the difference between fainting and passing out?
Fainting happens when you lose consciousness for a short amount of time because your brain isn’t getting enough oxygen. The medical term for fainting is syncope, but it’s more commonly known as “passing out.” A fainting spell generally lasts from a few seconds to a few minutes.
How long does a faint last?
The lack of blood to the brain causes loss of consciousness. Most fainting will pass quickly and won’t be serious. Usually, a fainting episode will only last a few seconds, although it will make the person feel unwell and recovery may take several minutes.
What is the most common reason for fainting?
The most common causes of fainting are vasovagal (a sudden drop in heart rate and blood pressure) and cardiac conditions.
Can you faint from not eating?
A drop in your blood sugar may also cause you to faint. This can happen if you have diabetes. It may also happen if you don’t eat for a long time. More serious causes of fainting include seizures and problems with the heart or with the blood vessels leading to the brain.
Do you breathe when you faint?
A person may be unconscious for a few seconds — as in fainting — or for longer periods of time. People who become unconscious don’t respond to loud sounds or shaking. They may even stop breathing or their pulse may become faint. This calls for immediate emergency attention.