Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Progeria ?
    ### Response:
    Progeria is a rare condition characterized by dramatic, rapid aging beginning in childhood. Affected newborns usually appear normal but within a year, their growth rate slows significantly. Affected children develop a distinctive appearance characterized by baldness, aged-looking skin, a pinched nose, and a small face and jaw relative to head size.
    