Is dementia post stroke due to damage from the stoke or later vascular events/?

Either is possible.: The stroke itself may cause dementia, depending on the location in the brain. Not all strokes cause significant cognitive impairment. Also, the person who had the stroke is often at risk to have additional strokes and progressing cerebrovascular disease, related to the same risk factors that contributed to the initial stroke.

It vaires: Every stroke have different presentations. Some people have problems with speech and langauge. Some people have problems maintaining independency. If there is a facility that specialized post stroke rehabilitation center, i would order neuropsychological evaluation.

A progressive: Vascular dementia is based on ongoing damage to the brain which may not be as dramatic as a stroke. Likely there has been some asymptomatc damage even before the stroke.

Multiple causes: Its important to remember that dementia is often caused by multiple processes and recent studies have shown that patients predisposed to alzheimer's may have acceleration of that illness by other events, such as strokes.