Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Chronic hiccups ?
    ### Response:
    What causes chronic hiccups? Although the exact underlying cause of chronic hiccups is often unknown, many factors can contribute to the development of hiccups. For example, common triggers for hiccups include hot or spicy foods and liquids; harmful fumes; surgery; and/or certain medications.
    