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A member asked:
Why did i almost pass out when i accidentally cut myself? what causes this?
A doctor has provided 1 answer
Pretty common.: Common faint is caused by temporary decrease in blood flow to the brain. The brain usually puts an inappropriate brake on the heart rate at the same time blood vessels fail to constrict. This allows blood pressure in the brain to fall slightly producing the sensation.
Answered 6/1/2015
2.8k views
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