Adrian Robinson Jr stopped playing football because he had suffered to many concussions. May 16th 2015 he was reported dead from hanging. Robinson is the latest former NFL player to be diagnosed with chronic electroencephalography, or CTE, after his death. He was 25 Years old.
CTE is a progressive degenerative disease of the brain found in athletes (and others) with a history of repetitive brain trauma or concussions. The symptoms of CTE include memory loss, confusion, impaired judgment, impulse control problems, aggression, depression, anxiety, suicidal thoughts, Parkinsons, and, eventually, progressive dementia.
The picture above shows the CAT scan of a normal brain, someone with CTE and advanced dementia. CTE is a progressive, degenerative brain disease for which there is no treatment. The only thing that people can do with CTE is treat their symptoms with therapy. CTE can only be diagnosed after death for now.