Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Neurosyphilis ?
    ### Response:
    Neurosyphilis is a disease of the coverings of the brain, the brain itself, or the spinal cord. It can occur in people with syphilis, especially if they are left untreated. Neurosyphilis is different from syphilis because it affects the nervous system, while syphilis is a sexually transmitted disease with different signs and symptoms.
    