Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Autosomal dominant neuronal ceroid lipofuscinosis 4B ?
    ### Response:
    Autosomal dominant neuronal ceroid lipofuscinosis 4B is a form of adult neuronal ceroid lipofuscinosis, which is a rare condition that affects the nervous system. Signs and symptoms usually begin around age 30, but they can develop anytime between adolescence and late adulthood.
    