Anyone with signs of TBI should receive medical attention as soon as possible. If you have questions about TBI, talk to your health care provider. Moderate and severe TBI can produce more symptoms including: Mild TBIs always involve some degree of brain injury. If a person has the symptoms of TBI after a blow to the head, then the brain has been injured. But when it happens, TBI can range from mild (like a brief change in mental status or consciousness) to severe (like a longer period of unconsciousness or major problems with thinking and behavior after injury).Ībout 75 percent of TBIs (or 3 out of every 4) that occur each year are mild. TBI is often caused by a bump, blow, jolt, or explosive blast to the head, or a penetrating head injury that disrupts the brain’s normal function. Food and Drug Administration continues to study TBI and encourages the development of medical devices to help diagnose and treat it. This damage is called a traumatic brain injury (TBI). Here’s how damage can happen: A sudden movement of the head and brain can cause the brain to bounce or twist in the skull, injuring brain cells, breaking blood vessels, and creating chemical changes. Head injuries can happen to anyone, at any age, and they can damage the brain. These things-and more-can cause head injuries.

Signs of serious head trauma