It is most pronounced in football, and a related ailment (dementia pugilistica) afflicts boxers, but is also seen in other sports, and in females and adolescents.
American | Association football | association football | American Civil War | football (soccer) | American Broadcasting Company | National Football League | American football | African American | American Idol | Forward (association football) | American Revolutionary War | college football | Goalkeeper (association football) | Defender (association football) | Football (soccer) | American Revolution | Football in Italy | England national football team | Australian Football League | American Association for the Advancement of Science | Australian rules football | American Red Cross | Argentina national football team | American Library Association | American Museum of Natural History | American Express | American Academy of Arts and Sciences | American League | Canadian Football League |
In December 2012, Herron and former players Raymond Austin and Gerry Sullivan filed a lawsuit against the NFL over their handling of concussions.
He was featured on HBO's Real Sports with Bryant Gumbel in a story about former football players who are suffering from head injuries that happened during their playing time.