About this piece.
This was originally a video episode rather than a written article, so there is no full text to read here. It covered Chronic Traumatic Encephalopathy, CTE, CCL-11.
Because it has not been reviewed or updated since it was published, treat it as history rather than current advice.
For current information, read our post-concussion syndrome guide.
Our current guide on this subject is written in plain language and cites public health and medical sources. It is the better starting point if you are looking for information today.
If you have questions about your own situation, call (775) 507-2000. Please don't send medical details through the website.