Chronic traumatic encephalopathy (CTE) is a neurodegenerative brain condition that is linked to symptoms including memory loss, confusion, changes in gait and speech, impaired judgement, difficulties with impulse control, aggression, depression, parkinsonism, and progressive dementia. Currently, a definitive diagnosis of CTE is only possible following post-mortem examination.
Most medical research is currently directed towards understanding the association of CTE with repeated head injuries and blows to the head (i.e. concussions), most prevalent in the sporting arena. However, while there is growing concern about CTE and its possible relationship with concussions, a causative link is yet to be clearly established in medical science. Accordingly, case law and legislative regulation of CTE is still in its infancy and known claims in this area have so far been limited to elite athletes.