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A concussion is a mild form of traumatic brain

injury (TBI) caused by a bump, blow, or jolt to the

head. Concussions can also occur from a fall or a

blow to the body that causes the head to move

rapidly back and forth. Doctors may describe these

injuries as "mild" because concussions are usually

not life-threatening. Even so, their effects can be

serious. Understanding the signs and symptoms of

a concussion can help you get better more quickly.

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