A concussion is a type of traumatic brain injury that leads to short-term impairment of mental function.
Concussion testing is done when a person experiences a minor head trauma, typically caused by blunt trauma to the head.
A brain injury is a disruption in the function of the brain when an outside force makes it rock back and forth. Learn about symptoms and treatment.
About 65 percent of regular runners get hurt each year. It’s estimated that the average runner will sustain one injury for every 100 hours he or she runs.