Post-concussion syndrome
Post-concussion syndrome, also known as postconcussive syndrome or PCS, is a set of symptoms that may continue for weeks, months, or a year or more after a concussion – a mild form of traumatic brain injury (TBI). The rates of PCS vary, but most studies report that about 15% of individuals with a history of a single concussion develop persistent symptoms associated with the injury. A diagnosis may be made when symptoms resulting from concussion last for more than three months after the injury. Loss of consciousness is not required for a diagnosis of concussion or post-concussion syndrome.
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.