Chronic traumatic encephalopathy (CTE) is a progressive degenerative disease which afflicts the brain of people who have suffered repeated concussions and traumatic brain injuries, such as athletes who take part in contact sports, members of the military and others.

The brain of an individual who suffers from CTE gradually deteriorates and will over time end

When someone is injured during a sports activity, the one who caused the injury will likely raise a defense called "assumption of risk". The wrongdoer argues that he’s not to blame because the law didn’t require him to protect the participant from the particular risk of harm involved in the claim. Whether the doctrine applies