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.
Concussion (2015 film)
Over the next few years, Omalu discovers that three other former NFL players, Strzelczyk (died 2004), Terry Long (died 2005), and Andre Waters (died 2006), had symptoms very similar to Webster's. He finally persuades newly appointed NFL commissioner Roger Goodell to allow him to present his findings before a committee on player safety. However, the NFL does not take him seriously, and he is barred from the committee meeting, forcing Bailes, a former NFL employee, to give the presentation in his place. However, the meeting is a set up, where the NFL claims that the players' head trauma was due to past injuries, having nothing to do with football. As he leaves the meeting, former NFL Players Association executive Dave Duerson angrily confronts Omalu and tells him to "go back to Africa."