NASCAR legend Fred Lorenzen officially becomes the first driver diagnosed with CTE, a disease with no cure or way to confirm it before death

Fred Lorenzen, a legendary NASCAR driver, was diagnosed with Stage 3 chronic traumatic encephalopathy after his death. CTE is associated with repeated head impacts and can only be confirmed post-mortem. Lorenzen's family announced a donation of $1 million for CTE research and established a memorial help line. The condition has sparked concerns in motorsports due to the high risk of head injuries.