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Blackout while standing up, pupils dilated. Feels weak, tired, dizzy and gaining weight. What's going on?

When I stand up I blackout. This happens so often that I often brace myself or crouch down. I could be standing outside and walk inside and this happens. My eyes are open and everything goes black. Afterwards, my pupils are dilated, I feel week and dizzy. I don t really do any exercise anymore because I feel tired all the time and dizzy when standing. I am 20 years old 5 4 and 100 pounds. I have trouble gaining weight and eat quite a bit.
Asked On : Sat, 23 Jun 2012
Answers:  1 Views:  383
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Anesthesiologist 's  Response
dear pt
as complaint you mentioned here are feature of postural get cvs/cns examination by any qualified physician
dr sanjay sharma
Answered: Wed, 23 Oct 2013
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