Brain injury prevention focuses on ways to minimize these injuries in everyday life. There are three levels of prevention: primary (or first), secondary (or second), and tertiary (or third).
The goal of primary prevention is to stop a brain injury from happening in the first place. This is done by reducing the risk of exposure to an injury. An example of primary prevention is teaching athletes about tackling and heading techniques to prevent TBI while playing football.
If someone already has a brain injury, secondary prevention is used to keep that injury from getting worse. Having a doctor examine you for a concussion after a hit to the head, called "screening," is an example of secondary prevention.
The last level of prevention is tertiary. Tertiary prevention is used to lessen the effects of a brain injury. The CDC has new guidelines on mild traumatic brain injury (mTBI) among children, which include 19 recommendations relating to diagnosis, prognosis (outcome), and the management/treatment of pediatric mTBI .

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