Shane Tamura, 27, had a documented history of mental health problems and carried a handwritten note in his wallet when he carried out the shooting that claimed he had chronic traumatic encephalopathy, ...

The former high school football player left a note at the scene repeatedly mentioning “CTE” — chronic traumatic ...

The New York City shooter who sought to attack NFL offices said he had a degenerative brain disease, called chronic traumatic ...

The gunman from Las Vegas who committed the mass shooting last week in New York City repeatedly threatened to harm himself, ...

Despite updated rules and safer equipment, football players continue to suffer from concussions. Experts warn that long-term ...