There are two types of acquired brain injuries: non-traumatic and traumatic. Non-traumatic brain injuries are those that occur without a physical cause, such as stroke, encephalitis, and seizures. Traumatic brain injuries (TBIs) occur when there is a sudden impact to the head. It could be a hard blow to the head or could involve a sharp item penetrating the brain. These are caused by assault, falls, sports, and of course, car accidents. Learn More