Dementia Due to Alzheimer's Disease | Dementia Due to Brain Vascular Disease
(Vascular Dementia) | Dementias Due to Lewy Body Disease | Dementia Due to Frontotemporal Degeneration | Less Common Dementias
Alzheimer's dementia is the most common form of dementia.
Depending on the population series, 50%–70% of
people with dementia are diagnosed clinically as having dementia
due to Alzheimer's disease (Ranginwala et al. 2008),
sometimes referred to as possible or probable Alzheimer's
disease by the National Institute of Neurological Disorders and
Stroke criteria (McKhann et al. 1984). Although experts
can make the clinical diagnosis with high reliability, in population series,
the pathological changes seen in the brains of people with Alzheimer's
dementia are varied. The vast majority of patients meet pathological
criteria for Alzheimer's disease; a significant number
of patients have other pathological findings as well, such as infarcts,
Lewy bodies, and lacunes.