Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the treatments for Moyamoya disease ?
    ### Response:
    How might Moyamoya disease be treated? Treatment for Moyamoya disease should begin early in the disease course to prevent severe complications. Surgery is the mainstay of treatment, and is the only viable long-term treatment. There are several types of revascularization surgeries that can restore blood flow to the brain by opening narrowed blood vessels, or by bypassing blocked arteries.
    