Head injuries are common, especially in young athletes. However, they may also occur in adults who slip and fall or bump into a hard object.
Concussions are potentially serious complications of head injuries.
There are various gradations of severity of a concussion. A grade 1 or mild concussion consists of no loss of consciousness, transient confusion, and symptoms clearing in 15 minutes. In a grade 2 concussion there no unconsciousness but the symptoms persist longer than 15 minutes. If symptoms, such as confusion, last longer than an hour the person should seek medical attention. A grade 3 concussion occurs when there is a loss of consciousness.