Search results
Results from the WOW.Com Content Network
Fainting, or passing out — a temporary loss of consciousness also known as syncope — is caused by insufficient blood flow to the brain. Some causes of syncope are fairly benign, such as from dehydration, or during a frightening or uncomfortable event, such as a blood draw.
Fainting is a sudden loss of consciousness from a lack of blood flow to the brain. It can be caused by many things, including dehydration, shock, too much alcohol, and even anxiety. While a fainting spell usually doesn't last for long, it can be associated with a life-threatening event like a heart attack.
Fainting, or syncope, is a temporary loss of consciousness caused by a lowered blood flow to the brain. Various conditions can trigger fainting, ranging from mild to serious.
While often the cause of fainting is something minor, fainting also can be a sign of a serious underlying medical concern. The problem is that you can't evaluate yourself, and you should let a physician determine if fainting is worrisome or not.
The most common reason for fainting is a sudden drop in blood pressure, which reduces blood flow and oxygen to your brain. There are many reasons why a drop in blood pressure could lead to a temporary loss of consciousness:
Fainting, also known as syncope, is a temporary loss of consciousness that most commonly occurs as a result of a sudden drop in blood pressure, resulting in a lack of oxygen to the brain. Common causes include emotional triggers, dehydration, standing up too quickly, and medication side effects.
Fainting can be triggered by a number of factors, including: fear or other emotional trauma. severe pain. a sudden drop in blood pressure. low blood sugar due to diabetes. hyperventilation ...
The most common cause of fainting is what physicians call vasovagal syncope. “It happens as a result of a fascinating chain of reactions in the body,” explains Dr. Aziz. “It can occur when your body overreacts to certain triggers, with changes in vessel tone and blood pressure, as mediated by the brain.”
Fainting is caused by a sudden decrease in blood flow to the brain. Usually the cause of fainting is not serious. For example, being dehydrated (not having enough fluid in the body), being too hot, being in a crowded room or feeling intense emotion can cause a person to faint. After the person faints, the head is at the same level as the heart.
There are many reasons why someone might faint. Causes include: standing up too quickly – this could be a sign of low blood pressure. not eating or drinking enough. being too hot. being very upset, angry or in severe pain. heart problems. taking drugs or drinking too much alcohol.