What Is a Concussion?

A concussion is a type of traumatic brain injury—or TBI—caused by a bump, blow, or jolt to the head or by a hit to the body that causes the head and brain to move rapidly back and forth. This sudden movement can cause the brain to bounce around or twist in the skull, creating chemical changes in the brain and sometimes stretching and damaging brain cells.

Concussions Are Serious

Medical providers may describe a concussion as a “mild” brain injury because concussions are usually not life-threatening. Even so, the effects of a concussion can be serious.

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HEADS UP Video: What Is a Concussion?

Learn More about Concussions and Brain Injury

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What Is A Concussion?
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Concussion Signs and Symptoms
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Responding to Concussion
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Danger Signs
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Severe Brain Injury
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Recovery from Concussion
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Returning to School
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Returning to Sports
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Brain Injury Safety and Prevention
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