Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) malignant hyperthermia ?
    ### Response:
    Malignant hyperthermia is a severe reaction to particular drugs that are often used during surgery and other invasive procedures. Specifically, this reaction occurs in response to some anesthetic gases, which are used to block the sensation of pain, and with a muscle relaxant that is used to temporarily paralyze a person during a surgical procedure.
    