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What is frontotemporal dementia?

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The shrinkage of tissue in the frontal and temporal lobes of the brain that affects personality and behaviors is considered frontotemporal dementia, or FTD, according to the National Institute of Neurological Disorders and Stroke. Pick's disease, primary progressive aphasia and semantic dementia fall under the umbrella of frontotemporal dementia.

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Frontotemporal dementia accounts for approximately 10 to 15 percent of all dementia cases, explains the Alzheimer's Association. Language impairments range from speaking in broad terms with less meaning to having trouble forming words altogether. Involuntary movements, the lack of coordination, and the loss of balance represent mobility issues experienced by those with frontotemporal dementia.

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