Fainting usually is caused by a temporary drop in blood pressure. During that brief drop, the brain does not get the blood flow that it needs—and you lose consciousness.
What is the most common reason for fainting?
The most common reason for fainting is a sudden drop in blood pressure, which reduces blood flow and oxygen to the brain. There are many reasons why a drop in blood pressure could lead to a temporary loss of consciousness: Cardiac syncope: This type of syncope involves fainting due to a heart problem.
How do I stop feeling faint?
If you feel like you are about to faint, try to:
- lie down with your legs raised – if you cannot do this then sit with your head lowered between your knees.
- drink some water.
- eat something.
- take some deep breaths.
