Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Adult-onset Still's disease ?
    ### Response:
    Adult-onset Still's disease is an inflammatory condition characterized by high fevers, rash, sore throat, and joint pain. As it progresses, adult-onset Still's disease may lead to chronic arthritis and other complications. Still's disease was named after an English doctor named George Still, who described the condition in children in 1896.
    