What is chronic traumatic encephalopathy?

Posted: 7:48 PM EDT May 06, 2012   Updated: 3:43 PM EDT Apr 27, 2016

Here is an explainer about CTE -- the progressive brain disease that is at the center of a debate between retired athletes and multiple sports leagues.

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Chronic traumatic encephalopathy (CTE) is a progressive degenerative disease, diagnosed post-mortem in individuals with a history of multiple concussions and other forms of head injury.

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