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).
Sean Morey (American football)
In October 2010, Morey was named co-chair of the NFL Players Association's newly formed Concussion and Traumatic Brain Injury Committee. Morey suffered more than twenty concussions in his career. Morey's committee has two main goals: the diagnosis, treatment, and prevention of concussions and traumatic brain injuries in active players and research into the long-term cumulative effects of such injuries on NFL players.