Frontotemporal dementia: patient characteristics, cognition, and behaviour

Area of Science:

• Neuroscience
• Neurology
• Psychiatry

Background:

• Frontotemporal dementia (FTD) is a progressive neurodegenerative disorder.
• Understanding FTD's cognitive and behavioral profile is crucial for differential diagnosis.
• Distinguishing FTD from Alzheimer's disease (AD) can be challenging.

Purpose of the Study:

• To characterize sociodemographic data of FTD patients.
• To compare cognitive profiles of FTD and Alzheimer's disease (AD) patients using the CERAD neuropsychological battery (CERAD-NP).
• To investigate the frequency of behavioral disturbances in FTD and their relation to age and sex.

Main Methods:

• Fifty outpatients diagnosed with FTD based on Lund-Manchester consensus criteria.
• Cognitive function assessed using the CERAD-NP in 30 FTD patients.
• Thirty AD patients were matched for age, sex, and cognitive severity for comparison.

Main Results:

• FTD patients exhibited better performance than AD patients on word list learning, delayed verbal recall, and visuoconstruction (p < 0.05).
• No significant differences were found in naming and verbal fluency tasks.
• Frequent non-cognitive symptoms in FTD included loss of insight, speech abnormality, and apathy, more common in younger males.

Conclusions:

• The CERAD-NP is a useful tool for cognitive evaluation in suspected FTD.
• Additional tests for attention and executive function may enhance assessment.
• Informant interviews focusing on non-cognitive changes are recommended for improved diagnostic sensitivity.