Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) distal hereditary motor neuropathy, type II ?
    ### Response:
    Distal hereditary motor neuropathy, type II is a progressive disorder that affects nerve cells in the spinal cord. It results in muscle weakness and affects movement, primarily in the legs.  Onset of distal hereditary motor neuropathy, type II ranges from the teenage years through mid-adulthood.
    