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Alzheimer’s disease and other dementias 

Alzheimer’s disease and other dementias
Alzheimer’s disease and other dementias

John R. Hodges

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date: 27 September 2021

Dementia is defined as a syndrome consisting of progressive impairment in memory and at least one other cognitive deficit (aphasia, apraxia, agnosia, or disturbance in executive function) in the absence of another explanatory central nervous system disorder, depression or delirium.

Prevalence—dementia is common, affecting about 8% of all people over 65 years, rising to around 20% of those over 85 years. It is estimated that the 18 million people with dementia worldwide will increase to 34 million by the year 2025, with this increase being most marked in the developing countries....

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