There are no specific symptoms that have been clearly linked to CTE. Some of the possible signs and symptoms of CTE can occur in many other conditions. In the few people with proved CTE, signs and symptoms have included cognitive, behavioral, mood and motor changes. CTE CTE CTE Cognitive impairment 
Difficulty thinking (cognitive impairment)
Memory loss
Problems with planning, organization and carrying out tasks (executive function)
 Behavioral changes 
Impulsive behavior
Aggression
 Mood disorders 
Depression or apathy
Emotional instability
Substance misuse
Suicidal thoughts or behavior
 Motor symptoms 
Parkinsonism
Motor neuron disease
 CTE symptoms don't develop right after a head injury, but experts believe that they might develop over years or decades after repeated head trauma. Experts currently believe that CTE symptoms appear in two forms. In early life between the late 20s and early 30s, the first form of CTE may cause mental health and behavioral issues including depression, anxiety, impulsivity and aggression. The second form of CTE is thought to cause symptoms later in life, around age 60. These signs and symptoms include memory and thinking problems that are likely to progress to dementia. CTE CTE CTE CTE The full list of signs to look for in people with CTE at autopsy is still unknown. It is unclear what kind of symptoms, if any, CTE may cause during life. Little is known right now about how CTE progresses.