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Reactive and Dissociative Psychosis Revisited: Trauma, Identity, and the Phenomenology of Collapse Cover

Reactive and Dissociative Psychosis Revisited: Trauma, Identity, and the Phenomenology of Collapse

Open Access
|Sep 2026

Figures & Tables

Table

Multidimensional Comparative Framework for the Differential Diagnosis of Dissociative Disorders, Reactive Psychosis, and Schizophrenia

DimensionDissociative DisordersReactive PsychosisSchizophrenia
Trigger and OnsetSudden onset after traumaAbrupt onset after existential crisisInsidious, no clear trigger
Narrative ContinuityFragmented but trauma-linkedSymbolic, metaphorical contentBizarre, non-relational delusions
Voice-Hearing PhenomenologyDialogic, emotionally charged voicesSymbolically meaningful voicesCommanding, impersonal voices
Affect and RegulationAffective storms and mutismEmotional overwhelm, then recoveryFlat or incongruent affect; catatonic outbursts of agitation
Identity and SelfIdentity fragmentation, alternating statesTransient destabilization of identityErosion of self-other boundaries
Course and OutcomeTends to resolve with supportAcute and often self-limitingChronic or relapsing course
Insight and Meaning-MakingPartial or delayed insightPartial insight, reflective potentialLimited or encapsulated insight
Somatic and Sensorimotor FeaturesAnalgesia, altered ownershipSomatic metaphorsDisorganized/catatonic features
Response to TreatmentResponsive to trauma-informed careResponsive to containment, supportive careRequires antipsychotic treatment
Prognosis and FunctioningOften return to high functioningGenerally favorable with integrationOften long-term impairment

[i] Note. This framework highlights key differentiating criteria across trigger, onset, phenomenological features, somatic presentation, and response to clinical interventions.

Diagnostic and clinical continuum from irreversible disintegration to reversible fragmentation across psychotic and dissociative spectra.

Legend:

The figure illustrates a multidimensional continuum ranging from schizophrenia, characterized by irreversible disintegration of the cohesive self, to dissociative disorders, where self-integrity is preserved and fragmentation remains reversible. Intermediate positions include schizoaffective disorder, trauma-related reactive psychosis, and schizodissociative reactive disorder, representing transitional forms with distinct modes of fragmentation and clinical trajectories.

Multidimensional diagnostic continuum from schizophrenia to dissociative identity disorder with clinically relevant differentiation vectors.

Legend:

The figure presents a structured diagnostic continuum spanning schizophrenia to dissociative identity disorder, organized across key clinical dimensions, including trigger type, self-structure, insight, and prognosis. The model highlights clinically meaningful vectors that facilitate differential diagnosis across psychotic and dissociative spectra, with particular emphasis on transitional forms such as trauma-related reactive psychosis and schizodissociative reactive disorder.

Language: English
Page range: 179 - 213
Submitted on: May 14, 2026
Accepted on: Sep 1, 2026
Published on: Sep 10, 2026
Published by: International Platform on Mental Health
In partnership with: Paradigm Publishing Services
Publication frequency: Volume open

© 2026 Mykhaylo Pustovoyt, Ivan Romash, Yuliia Medynska, Roman Kechur, Oxana Shevchuk, Iryna Romash, Vasyl Neyko, Volodymyr Paliichuk, Liubov Lutska, Olexander Myronenko, Berger Hartmut, published by International Platform on Mental Health
This work is licensed under the Creative Commons Attribution 4.0 License.