Alzheimer’s & Dementia Blog

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The terms Alzeimer’s and dementia are household words today. But some other, less well known types of dementia — that often strike before age 60 and cause difficultiies in thinking and behavior — are called frontemporal disorders (FTD). 

What Are Frontotemporal Disorders?

Damage to the brain’s frontal and temporal lobes causes forms of dementia called frontotemporal disorders.

Frontotemporal disorders are the result of damage to neurons (nerve cells) in parts of the brain called the frontal and temporal lobes. As neurons die in the frontal and temporal regions, these lobes atrophy, or shrink. Gradually, this damage causes difficulties in thinking and behaviors normally controlled by these parts of the brain. Many possible symptoms can result, including unusual behaviors, emotional problems, trouble communicating, difficulty with work, or difficulty with walking.

Frontotemporal disorders are forms of dementia caused by a family of brain diseases known as frontotemporal lobar degeneration (FTLD). Dementia is a severe loss of thinking abilities that interferes with a person’s ability to perform daily activities such as working, driving, and preparing meals. Other brain diseases that can cause dementia include Alzheimer’s disease and multiple strokes. Scientists think that FTLD is the most common cause of dementia in people younger than age 60. Roughly 60 percent of people with FTLD are 45 to 64 years old.

People can live with frontotemporal disorders for up to 10 years, sometimes longer, but it is difficult to predict the time course for an individual patient. The disorders are progressive,