Northwestern University Feinberg School of Medicine

Northwestern University Feinberg School of Medicine

About Dementia

Frontotemporal Dementia

What is frontotemporal dementia?

There is a type of dementia called "frontotemporal" which typically affects patients at a very early age. In this type of dementia, there is no true memory loss in the early stages of the type that is seen in Alzheimer's dementia. Instead, there are changes in personality, ability to concentrate, social skills, motivation and reasoning. Because of their nature, these symptoms are often confused with psychiatric disorders. There are gradual changes in one's customary ways of behaving and responding emotionally to others. Memory, language and visual perception are usually not impaired for the first two years, yet as the disease progresses and spreads to other areas of the brain, they too may become affected. Typically, the disorder affects females more than males.

The symptoms reflect the fact that the brain degeneration is not initially widespread and settles in the parts of the brain that are important for social skills, reasoning, judgement and the ability to take initiative.

When the brains of individuals with frontal lobe dementia are studied after death, the types of microscopic abnormalities that are seen are typically of two kinds. The first type is called Non-specific focal degeneration and the second is labeled Pick's disease. Non-specific focal degeneration accounts for 80% of cases of frontal lobe dementia. It is called "non specific" because there are no abnormal particles that are identifiable-only evidence that brain cells have been eliminated. Pick's disease, which accounts for 20% of cases of frontal lobe dementia, is identified under the microscope by abnormal particles called "Pick bodies", named after the neurologist who first observed them.

Comportment, Insight, and Reasoning

Frontotemporal dementia affects the part of the brain that regulates comportment, insight and reasoning. "Comportment" is a term that refers to social behavior, insight, and "appropriateness" in different social contexts. Normal comportment involves having insight and the ability to recognize what behavior is appropriate in a particular social situation and to adapt one's behavior to the situation. For example, a funeral is a solemn event requiring certain types of behavior and decorum. Similarly, while it may be perfectly natural and acceptable to take one's shoes and socks off at home, it is probably not the thing to do while in a restaurant. Comportment also refers to the style and content of a person's language. Certain types of language are acceptable in some situations or with friends and family, and not acceptable in others.

Insight, an important aspect of comportment, has to do with the ability to "see" oneself as others do. Insight is necessary in order to determine whether one is behaving in a socially acceptable or in a reasonable manner. Insight is also necessary for the patient to recognize his/ her deficits and illness. Changes in comportment may be manifested as "personality" alterations. A generally active, involved person could become apathetic and disinterested. The opposite may also occur. A usually quiet individual may become more outgoing, boisterous and disinhibited. Personality changes can also involve increased irritability, anger and even verbal or physical outbursts toward others (usually the caregiver). Comportment is assessed by observing the patient's behavior throughout the examination and interviewing other people (family and friends) who have information about the patient's "characteristic" behavior.

Individuals with frontotemporal dementia frequently have executive function and reasoning deficits. "Reasoning" refers to mental activities that promote decision-making. Being able to categorize information and to move from one perspective of a problem to another are examples of reasoning. "Executive functions" is a term that refers to yet another group of mental activities that organize and plan the flow of behavior. A good example of executive functions is what might happen if one were driving a car, talking with the passenger and suddenly having to respond to a child running into traffic. The ability to handle all the stimulation and to quickly plan a course of action is accomplished via executive functions. Individuals with frontal lobe dementia often lack flexibility in thinking and are unable to carry a project through to completion. Failure of executive functions may increase safety risk since they may not be able to plan appropriate actions or inhibit inappropriate actions.

Symptoms of Frontotemporal Dementia:

Persons with this form of dementia may look like they have problems in almost all areas of mental function. This is because all mental activity requires attention, concentration and the ability to organize information, all of which are impaired in frontal lobe dementia. Careful testing, however, usually shows that most of the problems stem from a lack of persistence and increased inertia.

Psychosocial Issues

The psychological, social, family and financial issues that affect individuals with frontotemporal dementia are drastically different from those that affect individuals with Alzheimer's type dementia. When dementia occurs earlier in life, issues such as working, teenage children and financial stress are different from the issues dealt with by individuals who are older and most likely retired. Planning for the family's financial security and for the education of children becomes a difficult prospect when an individual is faced with a dementing illness in the prime of his/her working career. The nature of the symptoms themselves are often embarrassing to family members and there may be loss of friends and other sources of social support. Finally, most adult day programs and residential care facilities are not equipped to address the special needs of the younger patient, especially if the behavioral symptoms are difficult to manage. As more is known about the disease, more policy changes may come into effect. Some residential care and adult day programs are recognizing the needs of the younger dementia patient and are beginning to offer services to meet their needs. Before making any decisions, it is best to investigate your options.

Depending on severity, a patient with impaired comportment may not be able to manage their daily activities without supervision. They may be at risk for harming themselves or being victimized because they would not be able to recognize their limitations or use proper judgement. Driving is usually unsafe for persons with this diagnosis.

Fortunately, there are steps that can be taken to provide a secure environment for the diagnosed person and obtain help for family:

Important Contacts

The Association for Frontotemporal Dementias

If the patient is working and needs to file for disability, it is best to speak to their employer as well as the local social security office. Disability benefits are usually obtained as long as your impairment does not medically improve and you cannot work.
Social Security's Toll-Free Number: 1-800-772-1213
Internet address:

You can obtain more information on resources from your local Alzheimer's Association.
The Alzheimer's Association, national number: 1-800-272-3900
Internet address:

An "elder law" attorney can assist you with legal and financial planning.
The National Academy of ElderLaw Attorneys: 1-520-881-4005
Internet address:

The Pick's Disease Support Group
For carers of frontotemporal dementia: Pick's Disease, Frontal Lobe Degeneration, Dementia with Lewy Bodies, Corticobasal Degeneration and Alcohol Related Dementia.

National Organization for Rare Disorders (NORD)
Phone: 800-447-6673

Alzheimer's Disease Education and Referral Center
Phone: 1-800-438-4380

NIH/National Institute of Neurological Disorders and Stroke
(800) 352-9424

NIH/National Institute on Aging
(800) 222-2225

The informaton on this page is for reference and educational purposes. There is no substitute for seeing your doctor.

Related Information

What is dementia?

Symptoms of dementia

Who gets Alzheimer's disease?

Making a diagnosis

Treatment of Alzheimer's disease

Other Types of Dementia

News in Alzheimer's Disease and Dementia - Alzheimer's Forum

Visit our Volunteer For A Study page. If you would like to participate in a research study and/or clinical trial, please contact us at 312-908-9023 or by e-mail at

This page last updated Mar 26, 2012

Cognitive Neurology and Alzheimer's Disease Center
320 E Superior, Searle 11
Chicago, IL 60611
Phone: 312-908-9339
Fax: 312-908-8789
Email Us