1. Dementia is present

2. Deficits in daily function are independent of the motor/sensory sequelae of the vascular event

3. Cognitive impairment and imaging evidence of cerebrovascular disease and:

1) A clear temporal relationship between a vascular event (eg, clinical stroke) and onset of cognitive deficits; or

2) A clear relationship in the severity and pattern of cognitive impairment and presence of diffuse subcortical cerebrovascular disease

4. No history of gradually progressive cognitive deficits before or after stroke that suggests the presence of a nonvascular neurodegenerative disorder