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Also known as: major neurocognitive disorder · Alzheimer's disease
An acquired, progressive decline in cognition (memory, language, executive function) that impairs daily function, with clear consciousness (unlike delirium). Alzheimer's is commonest; also vascular, Lewy body and frontotemporal types.
Older adults; risk with age, vascular risk factors, family history and Down syndrome; a minority have a reversible cause.
Alzheimer's / selected dementias
Behavioural symptoms — non-drug first
Caution: Antipsychotics increase stroke/death in dementia (marked neuroleptic sensitivity in Lewy body).
Guidelines change. If something here is out of date, tell us — we keep these current.
🚩 Report outdated / suggest update