Cognitive impairment due to cerebral infarction is called vascular cognitive impairment, and when the impairment is significant to a certain degree it is called vascular dementia. Patients are over 60 years of age and have a typical history of stroke with a gradual stepwise progression of the disease. Patients have distinctive cognitive impairment, mainly in the form of significant impairment in executive function. Patients have a significant decrease in the ability to set goals, abstract thinking and conflict resolution, lack of planning, initiative and lack of organization. There is also often impairment of near memory, which is manifested by the tendency to forget things that have just happened, while distant memory can be relatively retained. There is also a significant decrease in computational power, often having difficulty calculating complex formulas, and sometimes being unable to perform simple addition, subtraction, multiplication, and division. Patients also often have psychiatric symptoms, manifesting as anxiety or depression, sometimes with indifferent expressions, reduced speech or euphoria.