Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) ?
    ### Response:
    Chronic inflammatory demyelinating polyneuropathy (CIDP) is a neurological disorder characterized by progressive weakness and impaired sensory function in the legs and arms. The disorder, which is sometimes called chronic relapsing polyneuropathy, is caused by damage to the myelin sheath (the fatty covering that wraps around and protects nerve fibers) of the peripheral nerves.
    