(CNN) Chronic traumatic encephalopathy, known as CTE, was found in99 % o f deceased NFL players’ brains that were donated to scientific research, according to a study published Tuesday in the medical journal JAMA.
The neurodegenerative brain disease can be found in individuals wh o have been exposed to repeated head trauma.The disease is pathologically marked by a buildup of abnormal tau protein in the brain that can disable neuropathways and lead to a variety of clinical symptoms. These include memory loss, confusion, impaired judgment, aggression, depression, anxiety, impulse control issues and sometimes suicidal behavior.