Expression
of vascular dementia is used for a very
heterogeneous group of diseases in which death of brain cells in a clear
temporal relationship and dementia syndrome develops. Blood circulation
disorders arise because of damaged vessels due to vasoconstriction (vessel
shrinkage), inflammation or bleeding.
Important
sub-forms of vascular dementia are as follows
Single strategic
infarct dementia (post-stroke-dementia): One
stroke, not in the appropriate place of the thalamus as a strategic leads to
the destruction of vast areas of the brain.
Multi-infarct
dementia: Strokes
occurring simultaneously or temporal intervals destroys smaller areas of the
brain. Most of the time, they are small or "silent" strokes. However,
their effects will be higher and may lead to the destruction of a critical mass
of neural tissue.
Binswanger's disease
(subcortical arteriosclerotic encephalopathy): Numerous small, often unnoticed deep strokes
damages blood vessels of the brain. Typically ones white matter abnormalities
and lacunae resulting from the closure of the smaller end of the arteries.
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