Alzheimer disease

Definition / meaning of Alzheimer disease

A brain disorder that usually starts in late middle age or old age and gets worse over time. Symptoms include loss of memory, confusion, difficulty thinking, and changes in language, behavior, and personality. Also called Alzheimer dementia.

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Find More About 'Alzheimer disease'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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