Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Satoyoshi syndrome ?
    ### Response:
    Satoyoshi syndrome is a rare condition characterized by progressive, painful, intermittent muscle spasms, diarrhea or unusual malabsorption, amenorrhea, alopecia universalis, short stature, and skeletal abnormalities. Progressive painful intermittent muscle spasms usually start between 6 to 15 years of age.
    