Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) frontotemporal dementia with parkinsonism-17 ?
    ### Response:
    Frontotemporal dementia with parkinsonism-17 (FTDP-17) is a progressive brain disorder that affects behavior, language, and movement. The symptoms of this disorder usually become noticeable in a person's forties or fifties. Most affected people survive 5 to 10 years after the appearance of symptoms, although a few have survived for two decades or more.
    