CTE (Chronic Traumatic Encephalopathy) results from a TBI (Traumatic Brain Injury)
TBI
The CDC defines a traumatic brain injury (TBI) as a disruption in the normal function of the brain that can be caused by a bump, blow, or jolt to the head, or penetrating head injury. Everyone is at risk for a TBI, especially children and older adults.
Source: https://www.cdc.gov/traumaticbraininjury/
CTE
According to the CDC, CTE is a brain disease that results from changes in the brain. These changes can affect how a person thinks, feels, acts, and moves. Traumatic brain injuries, including concussions, and repeated hits to the head, called subconcussive head impacts, may lead to CTE.
Source: https://www.cdc.gov/traumaticbraininjury/outcomes.html
*Disclaimer: Paolo is not a licensed doctor or therapist. He merely advises based on experience. He also advises people to do their own research and homework*