dementia praecox

noun

dementia prae·​cox -ˈprē-ˌkäks 

: schizophrenia

Examples of dementia praecox in a Sentence

Recent Examples on the Web

Kraepelin also subdivided dementia praecox into three main types, types that are still recognized today. —Literary Hub, 28 Apr. 2026

Word History

Etymology

borrowed from New Latin, "precocious dementia"

Note: The Latin collocation dementia praecox was apparently first used as a diagnostic label by the Bohemian-born Jewish psychiatrist Arnold Pick (1851-1924), in "Ueber primäre chronische Demenz (so. Dementia praecox) im jugendlichen Alter," Prager medicinische Wochenschrift, Band 16 (1891), pp. 312-15. The term had been used earlier descriptively, from at least 1878 (Heinrich Schüle, Handbuch der Geisteskrankheiten, Band 16 of Handbuch der speciellen Pathologie und Therapie, Leipzig, p. 258 passim). Dementia praecox may or may not be a translation of French démence précoce, used by the French psychiatrist Bénédict Morel (1809-73), probably first in 1852 (Études cliniques: Traité théorique et pratique des maladies mentales, tome 1, Paris, p. 282).

First Known Use

1899, in the meaning defined above

Medical Definition

dementia praecox

noun

dementia prae·​cox -ˈprē-ˌkäks 

: schizophrenia