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Chapter 11 - The Behavioral Variant of Frontotemporal Dementia: Preclinical to Advanced Dementia

from Section 2 - The Dementias

Published online by Cambridge University Press:  17 November 2025

By
Ignacio Illán-Gala  and
Bruce L. Miller
Edited by
Bruce L. Miller  and
Bradley F. Boeve
Bruce L. Miller
Affiliation:
University of California, San Francisco
Bradley F. Boeve
Affiliation:
Mayo Clinic, Minnesota
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Summary

The behavioral variant of frontotemporal dementia (bvFTD) is a clinical syndrome characterized by progressive deterioration of social behavior and cognitive functions. It is one of the most common causes of early-onset dementia and is associated with frontotemporal lobar degeneration (FTLD). The diagnosis of bvFTD can be challenging due to its overlap with other psychiatric disorders, but obtaining a detailed clinical history from a reliable informant is essential. Diagnostic criteria for bvFTD include behavioral and cognitive features such as loss of motivation, social disinhibition, lack of empathy, repetitive behaviors, changes in eating habits, and executive dysfunction. Biomarkers such as brain imaging and genetic testing can help increase diagnostic certainty. Disease progression in bvFTD leads to disability and functional deterioration. Future research aims to improve early recognition, diagnostic accuracy, and the development of disease-modifying treatments.

Keywords

neuropsychiatrydiagnosisprognosisgeneticpathologydementiafrontotemporal dementiafrontotemporal lobar degenerationearly-onset dementiabiomarkers

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Chapter
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The Behavioral Neurology of Dementia , pp. 165 - 179
Publisher: Cambridge University Press
Print publication year: 2025

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