Behaviour changes in dementia. 2: Are there behavioural syndromes?

Area of Science:

• Gerontology
• Neuroscience
• Psychiatry

Background:

• Dementia presents with a wide spectrum of behavioral changes, often heterogeneous.
• Identifying distinct behavioral patterns is crucial for understanding and managing dementia.

Purpose of the Study:

• To determine if robust behavioral syndromes can be identified within the diverse behavioral changes observed in dementia.
• To categorize common and clinically significant behavioral changes in dementia.

Main Methods:

• A longitudinal, prospective study involving 97 elderly individuals with Alzheimer's disease or vascular dementia.
• Behavioral assessments were conducted over 4 and 8 months using the Present Behavioral Examination.
• Seventeen key behavioral items were analyzed to identify common and clinically important patterns.

Main Results:

• Three distinct behavioral syndromes were identified: overactivity, aggressive behavior, and psychosis.
• Overactivity included behaviors like aimless walking and checking on the carer.
• Aggressive behavior encompassed physical, verbal, and resistance-based aggression; psychosis included anxiety, persecutory ideas, and hallucinations.

Conclusions:

• Overactivity, aggressive behavior, and psychosis represent three distinct and robust behavioral syndromes in dementia.
• These syndromes were consistently identified across different time points and statistical analyses.
• The findings provide a framework for understanding and potentially targeting behavioral disturbances in dementia care.