Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Wallenberg's Syndrome ?
    ### Response:
    Wallenbergs syndrome is a neurological condition caused by a stroke in the vertebral or posterior inferior cerebellar artery of the brain stem. Symptoms include difficulties with swallowing, hoarseness, dizziness, nausea and vomiting, rapid involuntary movements of the eyes (nystagmus), and problems with balance and gait coordination.
    