The current assessment of dementia due to vascular causes in terms of terminology, classification, clinical features and diagnostic criteria, neuropathological lesions, risk factors, and possible treatment is reported. The term vascular dementia (VD) covers all syndromes with dementia of vascular origin. The clinical workout may reach a diagnostic sensitivity ranging from 70 to 85%. Verified ischemic lesions associated with dementia include multiple large and small infarctions, multiple lacunes, and, less frequently, watershed infarctions and other vascular diseases. However, the pathological evidence of infarction does not necessarily mean that cerebral vascular lesions are responsible for a state of dementia. The mixed forms (degenerative and vascular dementia) are difficult to assess both from the diagnostic and neuropathological point of view. The etiology of VD is multifactorial.