LITTLE ROCK, Ark. (KTHV) - With football season just getting started -- a big concern for players and parents is injury.
Concussions are one of the most common injuries with football and any other contact sport.
The topic of concussions has been in the national news spotlight recently. On Thursday the National Football League and more then 45-hundred players reached a deal on a concussion-related lawsuit.
To learn more about the symptoms and dangers of concussions, THV 11's Elle Mohs sat down with Carla Killough McClafferty, author of the new book Fourth Down and Inches: Concussions and Football's Make-or-Break Moment.
"The definition for concussion has changed through the years," she says. "In the old days, football players believed a concussion was only if you were knocked unconscious. Today, doctors understand that a concussion is a traumatic brain injury that's caused by a bump or blow or jolt to the head that interferes with the function of the brain."
In the book she also explains what new research reveals about repetitive head injuries, and shares the lives of players who have been affected by concussions.
One of the retired NFL players she spoke to was former Philadelphia Eagles running back Kevin Turner who was diagnosed with Lou Gehrig's Disease four years ago.
"It was Kevin's interview that really changed the way that I felt about the whole book. From him I really tried to find out the balance between the love of the game, balanced with the science that I had been researching."
McClafferty interviewed numerous experts for research, including Dr. Ann McKee and Dr. Robert Cantu at the Center for the Study of Traumatic Encephalopathy, researchers at Purdue University, doctors, coaches, athletic directors, trainers and more.
According to the book, symptoms of concussions include:
-Ringing in the ear
-Nausea and vomiting
-Temporary loss of consciousness