The Development of Kraepelin's Concept of Dementia Praecox: A Close Reading of Relevant Texts.

JAMA Psychiatry
Kenneth S Kendler

Abstract

In 1893 and 1896, in his fourth and fifth textbook editions, Emil Kraepelin brought together 3 syndromes to form the first and second of his 2 prequels to dementia praecox (DP), a definitive version of which he would propose in his 1899 sixth textbook edition. These syndromes, which would become hebephrenic DP, catatonic DP, and paranoid DP, each had distinct histories. Hebephrenic DP was derived from syndromes first proposed by Hecker, and catatonic DP was derived from syndromes first proposed by Kahlbaum, and then both were substantially revised. Kraepelin created paranoid DP de novo from a division of his early broad delusional syndrome Verrücktheit, distinguishing it from paranoia. Two of these syndromes (catatonic DP and paranoid DP) were present in different forms in his earlier textbook editions, and 1 syndrome (hebephrenic DP) was not. In his 2 prequels, the 3 syndromes were listed together with a brief preface. In the sixth textbook edition, they became "clinical forms" of DP with a lengthy integrative introduction. Much more than in his prequels, in his sixth edition, Kraepelin stitched these 3 syndromes together, emphasizing their shared signs, symptoms, and course. Hebephrenia was the core of Kraepelin's DP concept,...Continue Reading

Citations

Dec 16, 2020·Schizophrenia Bulletin·Kenneth S Kendler
Feb 20, 2021·Journal of Affective Disorders·Kenneth S Kendler
Oct 14, 2020·International Review of Psychiatry·Awais Aftab, Elizabeth Ryznar
Jul 8, 2021·Psychotherapy and Psychosomatics·Bruce M CohenSuzann M Babb
Dec 9, 2021·JAMA Psychiatry·Kenneth S Kendler
Jan 28, 2022·History and Philosophy of the Life Sciences·David Rattray

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