Post-concussion syndrome
Though no universally accepted definition of postconcussive syndrome exists, most of the literature defines the syndrome as the development of at least 3 of the following symptoms: headache, dizziness, fatigue, irritability, impaired memory and concentration, insomnia, and lowered tolerance for noise and light. One complication in diagnosis is that symptoms of PCS also occur in people who have no history of head injury, but who have other medical and psychological complaints. In one study 64% of people with TBI, 11% of those with brain injuries, and 7% of those with other injuries met the DSM-IV criteria for post-concussion syndrome. Many of these PCS sufferers were misdiagnosed as having other unrelated conditions due to commonality of symptoms. (see diagnosis, below).
Concussions in sport
In 2010, more high school soccer players suffered concussions than basketball, baseball, wrestling, and softball players combined, according to the Center for Injury Research and Policy. According to a study in the "JAMA Pediatrics" medical journal, many girls do not get necessary care and prevention regarding concussions, and 56 percent of players (or their families) reporting concussion symptoms never sought treatment.