Below is an instruction from Human. Write a response.
    ### Instruction:
    What is the outlook for Neuroaxonal dystrophy ?
    ### Response:
    INAD is a progressive disease. Once symptoms begin, they will worsen over time. Generally, a babys development starts to slow down between the ages of 6 months to 3 years. The first symptoms may be slowing of motor and mental development, followed by loss or regression of previously acquired skills.
    