Not every individual who has migraines will experience a headache when exposed to these triggers. If a person is unsure what his or her specific triggers might be, maintaining a headache diary can be beneficial to identify those individual factors which lead to migraine.
Football and ice hockey were the organized sports with the most concussion injuries, and snow skiing, bicycling, and playground injuries accounted for the most concussions occurring from non-team-related activities.
According to the U.S. Centers for Disease Control and Prevention, about 200,000 people in the United States suffer concussions while playing sports every year. Concussions occur in a wide range of sports and affect all athletes, from professional players to little leaguers. Concussions are mild traumatic brain injuries, and sports concussion has become a significant problem.