Résumés
Résumé
Nous décrivons la trajectoire d’une femme de 24 ans connue pour un trouble de la personnalité limite (TPL) et une histoire traumatique complexe, qui présente des crises dissociatives importantes. L’évaluation initiale comprenant un entretien psychiatrique, l’utilisation d’échelles (PCL-5, CAPS-5) et la récolte d’informations collatérales permet d’identifier un Trouble de stress post-traumatique (TSPT) complexe comorbide ainsi qu’un trouble dissociatif de l’identité (TDI) et un TPL ne rencontrant plus les pleins critères diagnostiques. Le traitement consiste en une approche psychiatrique et psychothérapeutique intégrée selon le modèle TCD-TSPT. Après un suivi d’un peu plus d’un an et 45 séances de thérapie, la patiente est considérée en rémission clinique du TSPT, alors que les symptômes dissociatifs attribuables au TDI persistent, mais sont d’intensité moindre. Ce cas illustre que la réponse à la TCD-TSPT peut être favorable chez les patients ayant un TDI comorbide. Le suivi à un an post-thérapie met en lumière une persistance des crises dissociatives et un maintien de la rémission clinique du TSPT. La patiente partage sa perspective par rapport à son expérience en thérapie. Il s’agit à notre connaissance du premier cas rapporté des résultats à un an post-thérapie d’un traitement par l’approche TCD-TSPT chez une personne avec la comorbidité TSPT complexe et TDI.
Mots-clés :
- dissociation,
- traitement centré sur le trauma,
- cas clinique,
- trouble de personnalité limite,
- trouble dissociatif d’identité
Abstract
We describe the trajectory of a 24-year-old woman with a history of borderline personality disorder (BPD) and complex trauma who presented with significant dissociative episodes. The initial assessment—including a psychiatric interview, the use of standardized measures (PCL-5, CAPS-5), and collateral information gathering—identified complex post-traumatic-stress disorder (PTSD) comorbid with dissociative identity disorder (DIID) and incomplete diagnostic criteria for BPD. Treatment consisted of an integrated psychiatric and psychotherapeutic approach based on the DBT-PTSD model. After just over one year of follow-up and 45 therapy sessions, the patient was in clinical remission from PTSD, while dissociative episodes attributable to DID persisted at a lower intensity. This case illustrates that response to DBT-PTSD may be favorable in patients with comorbid DID. The one-year follow-up highlights the persistence of dissociative episodes alongside sustained clinical remission of PTSD. The patient also shares her perspective on her therapeutic experience. This is, to our knowledge, the first reported case of the results of DBT-PTSD on a person with both complex PTSD and DID, at one year of follow-up after finishing therapy.
Keywords:
- dissociation,
- trauma-focused treatment,
- case report borderline personality disorder,
- dissociative identity disorder
Parties annexes
Bibliographie
- Ahern, J., O’Connor, L. et Fortune, D. G. (2025). Navigating usage of complex PTSD in adult mental health services : A scoping review. Psychological Trauma.
- American Psychiatric Association. (2022). Diagnostic and statistical manual of mental disorders (5e éd., texte révisé ; DSM-5-TR). American Psychiatric Publishing.
- Bachrach, N. et Huntjens, R. J. C. (2025). Recent evidence-based developments in the treatment of dissociative identity disorder. Frontiers in Psychiatry, 16, 1650164.
- Bachrach, N., Rijkeboer, M. M., Arntz, A. et Huntjens, R. J. C. (2023). Schema therapy for dissociative identity disorder : A case report. Frontiers in Psychiatry, 14.
- Baekkelund, H., Ulvenes, P., Boon-Langelaan, S. et Arnevik, E. A. (2022). Group treatment for complex dissociative disorders. BMC Psychiatry, 22, 387.
- Barnicot, K. et Crawford, M. (2018). Posttraumatic stress disorder in patients with borderline personality disorder. Journal of Traumatic Stress, 31(6), 899-908.
- Blevins, C. A., Weathers, F. W., Davis, M. T., Witte, T. K. et Domino, J. L. (2015). The PTSD Checklist for DSM-5 (PCL-5). Journal of Traumatic Stress, 28(6), 489-498.
- Bohus, M., et al. (2020). Dialectical behavior therapy for PTSD. JAMA Psychiatry, 77(12), 1235-1245.
- Brand, B. L., et al. (2016). Six myths about dissociative identity disorder. Harvard Review of Psychiatry, 24(4), 257-270.
- Brogan, K., et al. (2020). Lifestyle interventions and DID. Advances in Mind-Body Medicine, 34(3), 4-10.
- Chien, W. T. et Fung, H. W. (2022). Challenges in diagnosis and treatment of dissociative disorders. Alpha Psychiatry, 23(2), 45-46.
- di Marco, S., et al. (2025). Knowledge and perceptions of DID. L’Encéphale, 51(2), 133-140.
- Fast, I. (1974). Multiple identities in borderline personality organization. British Journal of Medical Psychology, 47(4), 291-300.
- Ford, J. D. et Courtois, C. A. (2021). Complex PTSD and BPD. Borderline Personality Disorder and Emotion Dysregulation, 8, 16.
- Fung, H. W., et al. (2023). Betrayal trauma and dissociation. Journal of Interpersonal Violence, 38, NP1630–NP1653.
- Ganslev, C. A., et al. (2020). Psychosocial interventions for dissociative disorders. Cochrane Database.
- Gagnier, J. J., et al. (2013). CARE guidelines. Journal of Clinical Epidemiology, 67(1), 46-51.
- Harned, M. S., et al. (2018). Functional outcomes in BPD and PTSD. Behaviour Research and Therapy, 103, 67-76.
- Krause-Utz, A., et al. (2021). Dissociation in BPD. Current Psychiatry Reports, 23, 37.
- Laddis, A., et al. (2017). Dissociation in DID and BPD. Journal of Trauma & Dissociation, 18(2), 139-173.
- Lim, E. C. N. et Lim, C. E. D. (2025). Diagnostic odyssey of DID. Cureus, 17(6), e86278.
- Lynn, S. J., et al. (2019). Dissociation and its disorders. Clinical Psychology Review, 73, 101755.
- Maercker, A., Cloitre, M., Bachem, R., Schlumpf, Y. R., Khoury, B., Hitchcock, C. et Bohus, M. (2022). Complex post-traumatic stress disorder. The Lancet, 400(10345), 60-72. https://doi.org/10.1016/S0140-6736(22)00821-2
- Martins, H. A. L., et al. (2022). Case report DID and BPD. Frontiers in Psychiatry, 13, 662290.
- Reisinger, B. A. A. et Gleaves, D. H. (2022). Social stigma of DID. Journal of Nervous and Mental Disease.
- Ross, C. A., et al. (2014). DID and BPD co-occurrence. Journal of Trauma & Dissociation, 15(1), 79-90.
- Schreiber, F. R. (1973). Sybil. Warner Books.
- Scognamiglio, C., et al. (2024). Childhood trauma and dissociation. Frontiers in Psychology, 15, 1332914.
- Storebø, O. J., et al. (2020). Psychological therapies for BPD. Cochrane Database, CD012955.
- van Minnen, A. et Tibben, M. (2021). CBT for PTSD and DID. Journal of Behavior Therapy and Experimental Psychiatry.
- Weathers, F. W., Bovin, M. J., Lee, D. J., Sloan, D. M., Schnurr, P. P., Kaloupek, D. G., Keane, T. M. et Marx, B. P. (2018). The Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) : Development and initial psychometric evaluation in military veterans. Psychological assessment, 30(3), 383-395. https://doi.org/10.1037/pas0000486
- World Health Organization. (2019). International classification of diseases (11e éd.).

