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Understanding Behavioral Variant Frontotemporal Dementia: Impact on Behavior and Cognition

Updated: Jun 27, 2023

Behavioral Variant Frontotemporal Dementia (bvFTD) is a neurodegenerative disorder characterized by changes in behavior and cognition. It is a challenging condition that poses significant difficulties in understanding and managing the symptoms. In recent years, researchers and healthcare professionals have recognized the importance of unraveling the complexities of bvFTD to provide better care and support for individuals affected by this condition.

This blog post will provide a brief background on bvFTD and emphasize the significance of comprehending its impact on behavior and cognition. By delving into these complexities, we can enhance our understanding of this condition and develop more effective strategies to address the unique challenges faced by those with bvFTD.

The Brain And BVFTD

Behavioral Variant Frontotemporal Dementia (bvFTD) is a type of Dementia that primarily affects the frontal and temporal lobes of the brain. These regions are responsible for various cognitive functions, personality, and social behavior. In bvFTD, there is a progressive degeneration and atrophy of the brain cells, leading to significant changes in behavior and cognition.

The frontal lobes play a crucial role in executive functions, such as decision-making, problem-solving, judgment, and impulse control. In bvFTD, the degeneration of frontal brain regions disrupts these functions, resulting in impaired judgment, impulsivity, apathy, and changes in personality and social behavior. Individuals with bvFTD may display socially inappropriate actions, disinhibition, emotional blunting, and a loss of empathy and sympathy.

The temporal lobes are involved in language comprehension, memory processing, and the recognition of faces and objects. As bvFTD progresses, the degeneration of the temporal lobes leads to difficulties in language expression and comprehension, memory deficits, and challenges in recognizing familiar faces or objects.

Differences Between bvFTD And Other Types of Dementia

It is important to note that bvFTD differs from other types of Dementia, such as Alzheimer's disease. While Alzheimer's primarily first affects memory, bvFTD predominantly affects behavior and personality. In bvFTD, cognitive decline may not be as prominent in the early stages compared to Alzheimer's. Instead, changes in behavior, social cognition, and executive functions are more pronounced.

Understanding how bvFTD specifically impacts the frontal and temporal lobes of the brain helps explain the unique behavioral and cognitive symptoms experienced by individuals with this condition. By recognizing these differences, healthcare professionals can provide targeted interventions and support tailored to the specific challenges faced by those with bvFTD.

Symptoms And Behavior Changes In bvFTD

Behavioral Variant Frontotemporal Dementia (bvFTD) is characterized by a wide range of symptoms and behavior changes that can significantly impact an individual's daily life and relationships. Some of the common symptoms and behavior changes seen in bvFTD include:

  1. Social Disinhibition: Individuals with bvFTD often exhibit a lack of social awareness and inhibition. They may engage in socially inappropriate behaviors, make inappropriate comments, or disregard social norms. This can lead to strained relationships and social difficulties.

  2. Emotional Changes: Emotional blunting or a decrease in emotional responsiveness is commonly observed in bvFTD. Individuals may display reduced emotional expression, indifference towards previously enjoyed activities, or a lack of empathy towards others.

  3. Executive Dysfunction: The frontal lobe impairment in bvFTD results in difficulties with executive functions. Decision-making, problem-solving, planning, organizing, and multitasking abilities may be significantly impaired, leading to difficulties in managing day-to-day tasks and responsibilities.

  4. Behavioral Rigidity: Individuals with bvFTD often exhibit rigid and inflexible behaviors. They may develop strict routines and rituals, resist changes or transitions, and have difficulty adapting to new situations or environments.

The Impact of bvFTD On Cognitive Functions

Behavioral Variant Frontotemporal Dementia (bvFTD) is characterized by significant cognitive impairments that differ from those seen in other types of Dementia, such as Alzheimer's disease. The cognitive impairments in bvFTD primarily arise due to the degeneration of the frontal and temporal lobes of the brain. Here are some key aspects of cognitive functioning that are affected in bvFTD:

  1. Executive Functions: Executive functions, which involve higher-level cognitive processes such as planning, decision-making, problem-solving, and cognitive flexibility, are significantly impaired in bvFTD. Individuals may struggle with initiating and completing tasks, exhibit poor judgment, struggle with decision-making, and find it challenging to adapt to changes.

  2. Language And Speech: As bvFTD progresses, individuals may experience difficulties in language comprehension and expression. They may struggle to find the right words, have reduced fluency, and exhibit changes in their speech patterns. This is different from the prominent language impairment typically seen in Alzheimer's disease.

  3. Memory: Memory impairment is generally less prominent in bvFTD compared to Alzheimer's disease. While individuals with bvFTD may experience some memory difficulties, they are usually overshadowed by the prominent behavioral and executive function changes.

  4. Visuospatial Abilities: Visuospatial abilities, which involve perceiving and understanding visual information and spatial relationships, are relatively preserved in the early stages of bvFTD. However, as the condition progresses, individuals may experience some decline in these abilities.

It's important to note that the pattern and severity of cognitive impairments in bvFTD can vary among individuals. Some individuals may experience more pronounced deficits in certain areas, while others may exhibit a broader range of cognitive impairments. Comprehensive neuropsychological assessments are essential for accurately assessing an individual's cognitive profile and tailoring interventions and support accordingly.

The Progression of bvFTD

The progression of bvFTD can vary from person to person, but it generally follows a predictable pattern. Here is a general overview of the stages and progression of bvFTD:

  1. Early Stage:

    • Mild Behavioral Changes: The initial signs may include subtle alterations in behavior, personality, and emotions.

    • Impulsivity And Disinhibition: Individuals may display impulsive behaviors, decreased social inhibitions, and inappropriate actions or comments.

    • Executive Dysfunction: Problems with planning, decision-making, multitasking, and organization become noticeable.

    • Lack of Insight: Affected individuals may deny or underestimate their symptoms, making it challenging to recognize the illness.

  2. Middle Stage:

    • Increased Behavioral And Cognitive Impairments: Symptoms become more pronounced and affect daily functioning.

    • Emotional Blunting: Individuals may exhibit a lack of emotional responsiveness and empathy.

    • Social Withdrawal: Social interactions become more challenging, and individuals may isolate themselves from others.

    • Language Difficulties: Some individuals may experience language impairments, including difficulties finding words or expressing themselves.

    • Repetitive Behaviors: Stereotyped and repetitive actions or routines may develop.

    • Changes In Eating Patterns: Individuals may have altered food preferences, show overeating or lack of interest in food, leading to weight changes.

  3. Late Stage:

    • Severe Behavioral And Cognitive Decline: Individuals may lose the ability to communicate effectively and require assistance with daily activities.

    • Apathy And Reduced Activity: Individuals become less engaged in their surroundings and lose interest in previously enjoyed activities.

    • Loss of Independence: Assistance with basic tasks, such as dressing, eating, and toileting, is necessary.

    • Motor Symptoms: Some individuals may develop movement abnormalities, such as parkinsonism or motoric apraxia.

    • Increased Dependency: Full-time care is typically required at this stage.

    • Swallowing Difficulties: Eating and swallowing problems may arise, increasing the risk of aspiration and related complications.

Current Treatments and Research Directions

Currently, there is no cure for bvFTD, and treatment focuses on managing symptoms and improving quality of life. The following approaches are commonly used:

  1. Medications:

    • Selective Serotonin Reuptake Inhibitors (SSRIs): These antidepressants may help manage some behavioral symptoms, such as irritability and impulsivity.

    • Antipsychotic Medications: These may be prescribed to manage severe agitation, aggression, or psychosis, but their use requires careful monitoring due to potential side effects.

    • Other Medications: Depending on specific symptoms, other medications such as mood stabilizers, anxiolytics, or stimulants may be considered.

  2. Non-Pharmacological Interventions:

    • Behavioral Strategies: Structured routines, environmental modifications, and caregiver education can help manage behavioral and functional changes.

    • Supportive Therapy: Counseling and support groups can assist individuals and their caregivers in coping with the emotional and practical challenges of the disease.

Recent Research Developments and Future Treatments: Research into bvFTD is ongoing, aiming to better understand its underlying mechanisms and develop more targeted therapies.


It's important to note that while significant progress is being made, translating research findings into effective treatments can take time. Consulting organizations like the Dementia Society or reaching out to medical professionals specializing in neurodegenerative diseases can provide the most up-to-date information and resources for individuals and families affected by bvFTD.

The opinions of contributing authors are not necessarily those of the Dementia Society, Inc. We do not endorse nor guarantee products, comments, suggestions, links, or other forms of the content contained within blog posts that have been provided to us with permission, paid or otherwise. Dementia Society does not provide medical advice. Please consult your doctor.

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