Moderate and severe traumatic brain injury

A rare neurologic condition characterized by brain damage caused by an external mechanical force, with a Glasgow Coma Scale score of 9 to 12 in moderate traumatic brain injury (TBI), or 3 to 8 in severe TBI, respectively. TBI can be closed (with the dura mater remaining intact) or open (with penetration of the dura mater) and may lead to focal damage, such as cerebral contusion and hemorrhage, as well as diffuse axonal injury and secondary damage due to increased intracranial pressure. Signs and symptoms are highly variable, depending on the nature, severity, localization, and extent of the trauma.