presenile dementia

/ (priːˈsiːnaɪl) /

noun

a form of dementia, of unknown cause, starting before a person is old

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Medical definitions for presenile dementia

presenile dementia

n.

Any of various forms of dementia developing before old age.
Alzheimer's disease. No longer in technical use.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.