After an accident, if you suffer a serious impact to your head, you may suffer a traumatic brain injury. That means that as your head moves one way, your brain inside your head may hit the side of your skull and cause injury. A closed head injury is another term for a traumatic brain injury. There’s no open bleeding but something went wrong and caused you tremendous damage. Your brain has been injured, you may black out, you may be dizzy, you may lose consciousness, you may be nauseous. You need to seek medical care right away. You need to have the doctors take care of you, and you need a lawyer who is experienced in these cases, who knows how to handle it, who knows how to help you out.