There are about 5.3 million people that have been affected with traumatic brain injury in the US, and the number of deaths from brain trauma have risen to 153 per day, accounting for 30 percent of injury-related deaths. Brain injuries may be caused by brain vibration within the skull, which can range from mild to serious, and others result from the penetration of an object to the head leading to punctures or fractures of the skull.
Some traumatic brain injuries include falling from a high surface or ladder, falling in the bathroom, auto and other accidents, domestic violence, child abuse, violent shaking of an infant, exposure to explosions, and extreme sports injuries such as football, boxing, and hockey. Scientists are studying these injuries in order to determine how the damage occurs. Some believe that a wave of stress travels through the brain and greatly affects its function.