A member asked:

What's the difference between passing out and being asleep?

A doctor has provided 1 answer

Syncope vs sleep: Syncope = passing out. Occurs because of lack of blood flow to head usually cardiac cause. There is autonomic dysfunction that ensues. Being asleep is a rapidly reversible state that can be controlled on whim with stimulation. This simply does not happen when passed out.

Answered 6/11/2019

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