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Vision going black, momentarily after standing. Actual reason for Dizziness?

I know that it is actually pretty common for a persons vision to go black momentarily after standing up too quickly but I am cautious to know what causes this. I have heard it is from low blood pressure or just from the blood in your head rushing down. What is the actual reason of the dizziness when you go from sitting/laying down to standing position.
Asked On : Sat, 22 Dec 2012
Answers:  1 Views:  326
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General & Family Physician 's  Response
normally wen v suddenly stand the blood pools in our leg veins and there is reduced blood supply to heart and hence brain for a small fraction of can happen once in a while..if its happening often then you got to get your hemoglobin checked and also check for postural hypotension.. visit your general physician for evaluation .
thank you
dr. mukesh
Answered: Thu, 27 Dec 2012
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