Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Neuroaxonal dystrophy ?
    ### Response:
    Infantile neuroaxonal dystrophy (INAD) is a rare inherited neurological disorder. It affects axons, the part of a nerve cell that carries messages from the brain to other parts of the body, and causes progressive loss of vision, muscular control, and mental skills.
    