A brain injury is any injury to the brain that affects a person physically, emotionally or behaviorally. Brain injuries can happen at birth or may arise later from trauma or an illness. Depending on the cause, a brain injury is called either traumatic or non-traumatic.
Traumatic brain injuries do not always include an open head wound or skull fracture. Loss of consciousness may not occur, either, but the one thing that all traumatic brain injuries have in common is contact. These are the most common causes of a traumatic brain injury (TBI):