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A member asked:
I never get headaches. i just had to give 7 vials filled with blood for testing and got a terrible headache. can this be the cause?
A doctor has provided 1 answer
Depends on "this": "This" is a vague word and can mean various things. If "this" means the symptoms or disorders that led a person to do blood testing, the car or bus trip to get to the lab and back, the other events of that day, the coincidental illness that one might be on her first day of... then YES, "this" could cause a headache. If "this" is the 7 vials (about 3 oz) of blood, probably the answer would be NO.
Answered 11/22/2019
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