How is chronic traumatic encephalopathy (CTE) diagnosed?

How is chronic traumatic encephalopathy (CTE) diagnosed?

CTE can only be definitively diagnosed in an autopsy after the person has died. The doctor will learn the personal history and analyze the brain tissue of deceased people who have shown symptoms of the condition. A specific pattern of tau protein in the brain can confirm the diagnosis.

Researchers are working to develop diagnostic tests to officially identify CTE while people are still alive.