presenile dementia

/ (priːˈsiːnaɪl) /

noun

a form of dementia, of unknown cause, starting before a person is old
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine 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.

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