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Background: Borderline Personality Disorder (BPD) is frequently complicated by the presence of dissociative symptoms. Pathological dissociation is linked with earlier and more severe trauma exposure, emotional dysregulation and worse treatment outcomes in Posttraumatic Stress Disorder and Dissociative Disorders, with implications for BPD., Objective: A systematic scoping review was conducted to assess the extent of current literature regarding the impact of dissociation on BPD and to identify knowledge gaps., Methods: Four electronic databases (MEDLINE, APA PsycINFO, EMBASE, CINAHL Plus) were searched, and English peer-reviewed studies with adults with BPD were included, following Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) extension for scoping reviews (PRISMA-ScR) 2018 guidelines., Results: Most of the 70 included studies were observational (98%) with first authors from Germany (59%). Overall, dissociation was associated with increased BPD symptom severity, self-harm and reduced psychotherapy treatment response; findings regarding suicide risk were mixed. Dissociation was associated with working memory and cognitive deficits, decreased pain perception, altered body ownership, no substance abuse or the abuse of sedative substances, increased fantasy proneness, personality fragmentation, fearful attachment, dream anxiety, perceived stress and altered stress responses, increased cumulative body mass index, decreased water consumption, several neurological correlates and changes in gene expression., Conclusion: BPD with significant dissociative symptoms may constitute a more severe and at-risk subgroup of BPD patients. However, there are significant research gaps and methodological issues in the area, including the possibility of unrecognized Dissociative Disorders in BPD study populations confounding results. Further studies are needed to better understand the impact of dissociation on BPD course and treatment, and to clarify the most appropriate assessment tools for clinical practice. In addition, interventional studies are needed to develop dissociation-specific BPD treatments to determine whether targeting dissociation in BPD can improve treatment outcomes.

Background: The diagnosis of borderline personality disorder (BPD) consists of extreme emotional dysregulation and long-term disability when left untreated. It is associated with ineffective use of health care systems and mismanaged care in emergency departments, which can result in a revolving door phenomenon of urgent system usage, poor treatment outcomes, or patients falling out of care entirely-all of which primarily affect patients with BPD as well as their caregivers and clinicians. This crisis must be addressed with a comprehensive understanding of key stakeholder perspectives on the challenges of the system and potential solutions., Objective: This study explored the perspectives of three key stakeholder groups (i.e., patients, clinicians, and caregivers) in relation to their experiences with and future expectations of the care system for those affected by BPD., Methods: Four patients with BPD, three generalist clinicians with experience treating BPD, and three caregivers of individuals with BPD participated in individual semi-structured interviews. Participants were asked about their experiences with the current healthcare system and their suggestions for improvement. Responses were analyzed using interpretative phenomenological analysis., Findings: In-depth analysis of the qualitative data revealed twelve shared themes and three themes that were unique to each key stakeholder group. These themes are discussed and used to inform recommendations for promising practices, policies, and training in this area., Conclusion: Findings support the importance of a comprehensive mental health system approach for improving the accessibility, effectiveness, and acceptability of the management and treatment of BPD., Competing Interests: The authors have declared that no competing interests exist.