What is a Traumatic Brain Injury (TBI)?

A TBI is an injury to the brain that is caused by a bump, blow, jolt, or penetrating injury to the head that disrupts the brain's normal function. Not all bumps, blows, or jolts to the head result in a TBI, but if the bump, blow, or jolt is severe enough, a TBI can result. TBIs range in severity from "mild," e.g. a concussion, to "severe," which can result in periods of unconsciousness, amnesia, and even death.