
A head injury is any trauma to the scalp, skull, or brain. The injury may be only a minor bump on the skull or a serious brain injury.
Head injury can be either closed or open (penetrating).
Head injury is a common reason for an emergency room visit. A large number of people who suffer head injuries are children. Traumatic brain injury (TBI) accounts for over 1 in 6 injury-related hospital admissions each year.