Dissociative Disorders
Dissociative Disorders (DSM-5-TR)
Disruptions in consciousness, memory, identity, or perception. Includes DID, depersonalization/derealization, and dissociative amnesia. Often co-occurs with complex trauma histories. Phase-oriented treatment is standard.
Prevalence: ~2-6% lifetime for pathological dissociation in community samples; ~1-1.5% for dissociative identity disorder; substantially higher in trauma-exposed and clinical populations
Clinical Picture
Dissociative disorders sit at the intersection of trauma, identity, and consciousness. They range from depersonalization/derealization (feeling detached from oneself or one's surroundings) to dissociative identity disorder (the presence of distinct identity states). Treatment requires specialized knowledge: general trauma approaches applied without understanding dissociative processes can inadvertently destabilize clients by accessing traumatic material faster than the system can integrate it. The structural dissociation model (van der Hart, Nijenhuis, Steele) provides a framework for understanding how the personality becomes divided in response to overwhelming experience.
Treatment Considerations
Phase-based treatment is standard: first establish safety and stabilization, develop internal communication and co-consciousness (in DID), then carefully approach trauma processing, and finally integrate and rehabilitate. Therapists working with dissociation need training beyond general trauma work. The practical safeguard is screening for dissociation before beginning any trauma-processing protocol, because standard EMDR and other exposure-based procedures can destabilize a dissociative client whose dissociation went undetected. Adapted EMDR and IFS are both used with dissociative presentations, though the published evidence is largely case series rather than controlled trials. Hypnosis is used by some specialists to facilitate communication between parts, but it raises suggestibility and can distort memory, and hypnotically influenced recall carries consequences that reach outside the therapy room into any later legal proceeding. Treatment is typically long-term.
11 Therapeutic Approaches
Sorted by evidence tier: guideline-recommended first, then RCT-supported, then emerging/limited evidence.
Related Clinical Vignettes
Sources & References
Prevalence data from NIMH, WHO, and DSM-5-TR field trial publications. Evidence tiers reflect guideline status (APA, NICE, VA/DoD, WHO) and meta-analytic findings as of early 2025. Individual modality citations are listed on each modality page. Full bibliography available on the Sources page.