Traumatic brain injuries occur as a direct result of trauma to the head. These types of injuries can be classified into open head injuries, like a skull fracture, and closed head injuries, like concussions and haemorrhages.
Closed head injuries are common in rapid deceleration situations, like car accidents involving head on collisions.
Hypoxic brain injuries are caused by lack of oxygen to the brain. The types of events that might cause hypoxic brain injuries are smoke inhalation, excessive carbon monoxide exposure and near drowning.
Certain medical conditions and diseases can also cause brain injuries, more commonly meningitis, tumours and stroke.