Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Central core disease ?
    ### Response:
    Central core disease (CCD) is an inherited condition that involves muscle weakness, skeletal abnormalities, and an increased chance of having a severe reaction to some anesthesia medications.  Muscle weakness ranges from mild to severe and typically affects muscles in the trunk and upper legs, though muscles in the neck and face can also be affected.
    