Vascular dementia is a product of a poor blood supply to the brain. The form of dementia is second most common type, after Alzheimer. The condition is more common among men and usually begins after age 70
Proper functioning of the brain cells is fully dependent on the supply of oxygen and other nutrients. When the vascular system fail to properly function due to plaque obstruction, or stroke, brain cells die and cognitive problems appear.
Narrowing of the vessels may lead to a formation of clots and eventually to a permanent or temporary blocking of the blood supply to the brain cells.
There are various forms of vascular disease affecting the brain.
A single large stroke can cause vascular dementia. This type of vascular dementia is called strategic infarct dementia.
A collection many unnoticeable strokes large blood vessels, classified as multi-infarct dementia.
About 20% people suffering from stroke end up developing dementia within less than one year from the time of the occurrence.
Most common vascular dementia caused by clotting of small deep brain cells. Such dementia is called subcortical dementia (or Binswanger’s disease). This is associated with, poorly controlled hypertension and general vascular disease.
Subcortical vascular dementia is usually progressive
Vascular dementia patients are generally more aware of their cognitive conditions, and therefore tend to turn more depressed as an outcome of their awareness.