Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Binswanger's Disease ?
    ### Response:
    Binswanger's disease (BD), also called subcortical vascular dementia, is a type of dementia caused by widespread, microscopic areas of damage to the deep layers of white matter in the brain. The damage is the result of the thickening and narrowing (atherosclerosis) of arteries that feed the subcortical areas of the brain.
    