What is a traumatic Brain Injury (TBI)?

A traumatic brain injury results from physical damage to brain tissue or a head blow that alters brain function. A TBI may occur from a traumatic force on a person’s body or an object penetrating the skull. A mild traumatic brain injury may only cause symptoms that last a few days or weeks. Moderate to severe traumatic brain injuries can have long-term or permanent effects on a person’s emotions, behavior, or physical and cognitive functioning.