Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Chronic hiccups ?
    ### Response:
    Chronic hiccups are unintentional movements (spasms) of the diaphragm followed by rapid closure of the vocal cords that persist for an extended period of time. Hiccups often develop for no apparent reason and typically go away on their own after a couple minutes.
    