A member asked:

I had shortness of breath and then i passed out. please, what could be the cause ?

4 doctors weighed in across 2 answers

Hyperventilation ( for example from extreme anxiety) can cause passing out as oxygen is exhaled and carbon di oxide accumulates, causing less o2 going to brain.

Answered 3/15/2023

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If the described shortness of breath was indeed an episode of hyperventilation, then the "passing out" would have been a secondary syncopal episode. Do confer with your doctor if this continues.

Answered 3/20/2023

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