Abstract

Concussion is a form of traumatic brain injury that has been defined as a “trauma-induced alteration in mental status that may or may not involve loss of consciousness.” Terms such as getting a “ding” or getting your “bell rung” are sometimes used as colloquialisms for concussion, but inappropriately downplay the seriousness of the injury. It is estimated that between 1.6 and 3.8 million concussions occur annually in the United States as a result of participation in sports or recreational activities. To date, there are no objective, biological markers for concussion; rather, the current diagnosis of concussion is dependent upon symptom reporting by the athlete. In the acute phase, concussions can result in a broad spectrum of symptoms that can be transient or last for days, weeks, or even months. Symptom prolongation is generally referred to as post-concussion syndrome.