Why Do People "Faint"?

Question

What happens when you faint? Is it possible to feel faint while driving?

Answer 1

low blood sugar, or a huge rush of oxygen to the brain at once

Answer 2

hahahaaha i passed out twice in school.

because i didnt eat for like 3 days haha

ok well i had "low blood sugar"

and the second time i just had heat stroke.

and lack of oxygen to the brain makes one faint.

your vision turns black and fuzy and then you get dizzy

you know its gunna heppen and when you stand up you collapse.

its possible to collapse ANYWHERE.

its not a pleasent experience but i got everyones attention [:

haha

Answer 3

Of course. It happens when your brain is lacking oxygen.  

Answer 4

Yes it is possible and caused by many things. An Illness, Lack of oxygen to the brain, low blood pressure, fear/anexiety, etc. It's not fun ;)

Answer 5

Lack of O2 to the brain.  

Answer 6

You can faint for different reasons. I have a medical condition called Neurocardiogenic Syncope. If I stand in one place too long, I tend to faint. I suppose it could be possible to feel faint while driving and it would be wise not to drive if you feel this way.

Answer 7

Multiple reasons......lack of oxygen, low blood pressure, low blood sugar.  Feeling faint while driving would probably be due to low blood sugar.   When you faint you pass out, become unconscious.  You don't stop breathing.

Answer 8

Fainting is a temporary loss of consciousness that is spontaneously recovered after only a brief period of time. People faint because of a lack of blood flow and decreased oxygen to the brain. The cause of fainting can be related to a number of conditions or situations, some involving the heart, many not. The medical term for fainting is syncope (SIN-ko-pee).

People most often faint as the result of an abnormal circulatory reflex. Some people faint at the sight of blood, in a crowded room, or even from excessive coughing. This is referred to as situational fainting and might affect a person repeatedly, but only in a very specific situation.

People may also faint when standing up after lying down. Referred to as postural fainting, this results from a decreased flow of blood to the brain, usually as the result of a drop in blood pressure. Postural fainting can occur after significant blood loss, dehydration, or a change in cardiovascular medication, or as a side effect to other medications. Certain medical conditions, such as heart disease, diabetes, and migraine headaches, can also serve as a catalyst for fainting.

Most people who faint experience symptoms beforehand. These symptoms may include lightheadedness, blurred or “spotty” vision, dizziness, and weakness. People who observe someone about to faint might notice paleness, sweating, and dilation of the pupils. In most situations, people who faint regain consciousness within a moment or two.