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“Manifestations of insanity”: Kraepelin’s final views on psychiatric nosology in their historical context

Molecular Psychiatry volume 27, pages 328–334 (2022)Cite this article

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Abstract

Emil Kraepelin, more than any other individual, has shaped the nature of our psychiatric diagnostic system. Kraepelin published his final contribution to psychiatric nosology as an essay in 1920, which both modified and explicated the conceptual foundation for this approach to diagnosis. This essay was a response to a new generation of psychiatrists, particularly Karl Jaspers, Karl Birnbaum, and Ernst Kretschmer, who each challenged Kraepelin’s view that psychiatric disorders represent natural kinds, (i.e., truly distinct entities). They had argued for a structural analysis of psychosis stressing the impact of unique, personal attributes on the causes and clinical presentations of mental diseases. The authors give this text a close reading and conclude that it offers a final nuanced description of Kraepelin’s advanced nosologic views and his emerging interest in life history and culture. Kraepelin held fast to his position that psychiatric disorders represented distinct natural kinds, but acknowledged that the distinctions between them were often obscured by personality, life experiences, and/or cultural effects. Kraepelin used several metaphors to illustrate his final views, that of an “organ register” being the most prominent. Psychiatric disorders, he postulated, belong to three registers, each with its own distinct clinical features and putative brain-based mechanisms. Published a century ago, this final synthesis of Kraepelin’s views, a capstone to his career, raises central issues about the nature of psychiatric illness and the appropriate goals for psychiatric nosology. They are fertile issues for psychiatric research and practice today.

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Fig. 1: The organ register metaphor in Kraepelin’s 1920 article.

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Authors and Affiliations

  1. Department of Psychiatry and Behavioral Sciences, Vanderbilt University Medical Center, Nashville, TN, USA

    Stephan Heckers

  2. Department of History, Humboldt University, Berlin, Germany

    Eric J. Engstrom

  3. Virginia Institute of Psychiatric and Behavioral Genetics, and Department of Psychiatry, Medical College of Virginia/Virginia Commonwealth University, Richmond, VA, USA

    Kenneth S. Kendler

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  1. Stephan Heckers
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  2. Eric J. Engstrom
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Correspondence to Stephan Heckers.

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Heckers, S., Engstrom, E.J. & Kendler, K.S. “Manifestations of insanity”: Kraepelin’s final views on psychiatric nosology in their historical context. Mol Psychiatry 27, 328–334 (2022). https://doi.org/10.1038/s41380-021-01232-9

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