A concussion happens when a blow or jolt makes the brain move rapidly inside the skull, stretching brain cells. Most young athletes recover quickly, but some symptoms last weeks or months. CDC, the NFL and 14 sports governing bodies made a poster urging athletes to report every head injury.
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Concussion
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Concussion ABCs: Learn How to Respond
CDC sets out concussion ABCs for schools: assess the situation, be alert for signs and symptoms, contact a health care professional. Even a seemingly mild bump can be serious, and risk is highest in PE class, on playgrounds and in school sports.
Disease
Tim Tebow concussion
Florida quarterback Tim Tebow was hit in the third quarter against Kentucky, vomited on the sideline, briefly lost consciousness and was taken by ambulance to a Lexington hospital. CT scans showed a concussion with no brain bleeding; his parents called it mild.
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