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.

Other causes include car and bicycle accidents, work-related injuries, falls, and fighting.

Dr. Meilani Mapa, MD of the Memorial Rehabilitation Institute talks about causes, treatment and prevention of concussions.
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