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A 25-year-old female asked:

he had little to eat/drink and then had a hard workout at the gym. he passed out after standing and bumped his head. how long do i monitor him?

1 doctor answer1 doctor weighed in
Dr. Vijay Karia
Internal Medicine 13 years experience
Concussion: Symptoms of a concussion don't always show up right away, and can develop within 24 to 72 hours after an injury. Best would be to go ahead and see the doctor in person for evaluation.

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Last updated Nov 8, 2018

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