Concussions

The most common and least serious type of traumatic brain injury is called a concussion. The word comes from the Latin concutere, which means "to shake violently."

According to the CDC, between 2001 and 2009, an estimated 173,285 people under age 19 were treated in hospital emergency rooms for concussions related to sports and recreation activities.

Some things increase your risk for a concussion, includes:

• Playing a contact sport
• Lack of proper safety gear or supervision for contact sports
• Car, motorcycle, bicycle, and other accidents that cause a blow to the head
• Being hit, struck with an object, or other physical abuse
  Military service
• An earlier concussion