A Brain injury is any sort of injury to your brain, skull or scalp. This can range from a traumatic brain injury or a bruise to mild bump. Common head injuries are skull fractures, and scalp wounds concussions. The outcomes and treatments vary extremely, build up on what caused your head injury and how handle it is. Brain injuries may be either closed or open. A closed head injury is an injury that doesn’t break your skull. An open (penetrating) head injury is one in which something breaks your skull and scalp and enters your brain. It can be set to assess how grave a head injury is just by looking. Some major injuries don’t bleed at all and Some minor head injuries bleed a lot.