Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Striatonigral Degeneration ?
    ### Response:
    Striatonigral degeneration is a neurological disorder caused by a disruption in the connection between two areas of the brain-the striatum and the substantia nigra. These two areas work together to enable balance and movement. Striatonigral degeneration is a type of multiple system atrophy (MSA).
    