This is a test of commonsense. Complete the next sentence:

How to identify symptoms of a head injury
Be aware of your risk.
Head trauma can happen to any person who bumps, bangs, or scratches his or her head. Injuries can happen as a result of car accidents, falls, collisions with other individuals, or simply bumping your head.
Although most head trauma results in minor injuries and don't require hospitalization, it's still important to check yourself or any person after a mishap. This can help ensure that you don't have a serious or potentially life-threatening head injury.