Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Batten Disease ?
    ### Response:
    Batten disease is a fatal, inherited disorder of the nervous system that begins in childhood. In some cases, the early signs are subtle, taking the form of personality and behavior changes, slow learning, clumsiness, or stumbling. Symptoms of Batten disease are linked to a buildup of substances called lipopigments in the body's tissues.
    