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A member asked:

Can any doc tell me what's the difference between falling asleep and passing out?

A doctor has provided 1 answer
Dr. Charles Coleman answered

Specializes in Sleep Medicine

See below.: Sleep is a normal physiologic state of the brain. "Passing out" is the colloquial term for what is medically known as "syncope" which occurs if, for whatever reason, the brain temporarily does not receive enough blood or oxygen.

Answered 9/29/2016

3.9k views

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