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A member asked:

I often black out when standing up and legs/arms fall asleep very fast---what can cause this?

A doctor has provided 1 answer
Dr. Alan Ali answered

Specializes in Psychiatry

Black out: Postural hypotension is when blood pressure drops upon standing, hence less blood flow to brain, hence fainting. Several things can cause that, from medications to blood diseases to neurological or vascular factors. Recommend appointment with your primary care doc. To explore those.

Dr Chuu agreed

Answered 10/24/2017

5.5k views

Thank

Related Questions

A member asked:

Haven't slept well in 4 days. As i start to fall asleep something twitches; sometimes arms sometimes legs. What can I do tot prevent this & get rest?

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A member asked:

Why do my hands/arms and legs/feet fall asleep easily also my viens seem to hurt?

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A member asked:

My arms legs forhead feel cold and it's hard fall asleep. My body doesn't produce enough heat and wonder if this an issue with my brain thermostat. Before all this trouble began I was constantly working in extreme cold temperatures?

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A member asked:

I have a numbness/stinging on the shaft and tip of my penis similar to when your arms or legs fall asleep, but not to that extent. I am able to achieve an erection though it seems that when flaccid it is a lot smaller and slightly discolored. ?

A doctor has provided 1 answer

A member asked:

Waking up with numb arms, hands and legs. Like theyre asleep. 6 months now. And if i sit my legs fall asleep even just a few mins. Recent diagnosis ofiron def and MS and ank spond. What now?

5 doctors weighed in across 3 answers

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