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CDC defines a traumatic brain injury (TBI) as a disruption in the normal function of the brain that can be caused by a bump, blow, or jolt to the head, or penetrating head injury. Everyone is at risk for a TBI, especially children and older adults.

CDC's research and programs work to prevent TBIs and help people recognize, respond, and recover if a TBI occurs.

Basic Info

Get the facts, signs and symptoms, response, recovery, prevention

Data & Statistics

TBI data and statistics on rates of TBI-related deaths, ER visits, hospitalizations


Getting answers and gathering information about concussion

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Online Training


Get free online training from CDC's HEADS UP.

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Connect with the CDC Injury Center

A Head for the Future - A traumatic brain injury prevention initiative for the military community, Learn more.