Traumatic brain injury (TBI) is damage to the brain resulting from a physical blow to head either by hitting or being hit with an object. Brain injury can also occur without an actual blow if the brain is pushed strongly against the skull, as occurs with whiplash or Shaken Baby Syndrome.
Repeated brain injuries have a cumulative effect resulting in more severe and more prolonged post-concussion symptoms. A very serious and dangerous condition or even death can occur if a second concussion is suffered while symptoms from a previous concussion still persist.
Traumatic Brain Injury (TBI) refers to brain damage that is caused by physical trauma. TBI can occur when there is a blow to the head or violent shaking (resulting in a closed brain injury) or when something penetrates the head and damages the brain tissue (causing an open head injury).