Frontotemporal dementia

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Frontotemporal dementia (FTD), also known as frontotemporal degeneration, and historically as Pick's disease, is a family of neurodegenerative disorders, caused by frontotemporal lobar degeneration that affects the frontal and temporal lobes. The FTD family includes behavioral variant FTD, primary progressive aphasia (PPA) and its semantic and nonfluent/agrammatic variants, primary progressive apraxia of speech (PPAOS), progressive supranuclear palsy, and corticobasal syndrome. Through a mutual risk gene, FTD and amyotrophic lateral sclerosis (ALS) share a clinical spectrum, where symptoms of both disorders can co-occur. Symptoms of FTD will typically match a specific disorder at first, though symptoms of other disorders will begin to show as the disease progresses to different areas of the brain. FTD disorders are a common young-onset dementia occurring under the age of 60. Approximately 60% of people diagnosed with FTD have no known cause and no family history of FTD or related conditions...

Read on Wikipedia · Image Mike Mooney AFTD, CC0