Dementia is not a specific disease, but rather is a descriptive term for a range of symptoms that are caused by a number of disorders that affect the brain. People with dementia have significantly impaired intellectual functions.
Vascular Dementia (or multi-infarct dementia “MID”) is caused by a series of mini strokes. MID is the second most common cause of dementia after Alzheimer’s disease in people over 65 and usually affects people in the age range 55 – 75, being more common in men than women.
A stroke is simply an interruption in, or blockage of, the blood supply to any part of the brain. If blood flow is prevented for any longer than just a few seconds, that part of the brain cannot get oxygen causing permanent damage.