Dementia Praecox or the Group of Schizophrenias

Dementia Praecox or the Group of Schizophrenias is a work by Bleuler, Eugen (1911).

Core claims

• Bleuler’s decisive move was not renaming a disease but reclassifying the relationship between symptom and disease itself — replacing symptomatological pictures with a genuine disease concept that could accommodate recovery, relapse, and arrest without contradiction.
• The distinction between fundamental and accessory symptoms is not a clinical convenience but an ontological claim: hallucinations and delusions are epiphenomena, while the splitting of psychic functions — loosened associations, flattened affect, autism — constitutes the disease’s invariant structural signature.
• By explicitly crediting Freud’s depth psychology and Jung’s complex theory as essential to understanding schizophrenic psychopathology, Bleuler made the Burghölzli monograph the hinge text where descriptive psychiatry and the psychodynamic tradition first fully interpenetrated at the level of systematic nosology.

Related questions

• How does Bleuler’s concept of the “splitting of psychic functions” as the fundamental feature of schizophrenia compare to Jung’s later elaboration of autonomous complexes in The Psychogenesis of Mental Disease, and where do the two frameworks diverge on the question of whether psychic fragmentation is qualitatively or quantitatively different from normal dissociation?
• Bleuler insists that autistic thinking — the retreat into a private universe — is a secondary symptom derived from primary associative disturbance. How does this structural claim relate to Winnicott’s concept of the “false self” or to R.D. Laing’s phenomenological reinterpretation of schizophrenic withdrawal in The Divided Self?
• Given that Bleuler explicitly credits Freud’s dream theory as essential to understanding the secondary symptoms of schizophrenia, how should we read Jung’s parallel claim in Symbols of Transformation that schizophrenic symbolism recapitulates mythological motifs — as an extension of Bleuler’s framework or a fundamental departure from it?

See also

• Library page: /library/the-psyche/bleuler-dementia-praecox/

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