<unk> <unk>  are a type of traumatic brain injury in which the skull and dura mater remain intact.<unk> -head injuries are the leading cause of death in<unk> ldren under 4 years old and the most common cause of physical disability and cognitive impairment in young people. Overall,<unk> -head injuries and other forms of mild traumatic brain injury account for about 75% of the estimated 17 million brain injuries that occur annually in the United States.  Brain injuries such as<unk> -head injuries may result in lifelong physical, cognitive, or psychological impairment and, thus, are of utmost concern with regards to public health.
Closed head injury
Traumatic brain injury
Head injury
Acquired brain injury
Penetrating head injury
Barotrauma
Polytrauma
Anoxic brain injury