Test your knowledge about concussions. Correct answers are at the bottom of the Center for Concussion Care page.

1. Most sports-related concussions are never diagnosed because athletes may not recognize or report the symptoms of concussion.

2. Among people who are 15 to 24 years old, the major cause of traumatic brain injury is sports.

3. Annually, ____ million children and adults in the United States experience a sports-related concussion.

4. What concussion symptoms are often observed by parents or guardians? (Check all that apply)