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A member asked:
Sometimes i can't see when i stand up too fast. what can cause this?
A doctor has provided 1 answer
Blood pressure drop: When a person stands up, the heart beats a little harder and faster increasing blood pressure in order to get blood up to the brain. If a person stands up too quickly, the blood pressure to the brain can drop resulting in a loss of vision, light-headedness, blacking out, and even falling. Certain medications and/or dehydration can make this respond more pronounced. Drink plenty of water.
Answered 5/25/2015
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