Identity Disturbance in Borderline Personality Disorder: A Scoping Review Protocol.

Background: Borderline personality disorder (BPD) is a complex mental health condition characterized by instability in interpersonal relationships, affect regulation, and impulse control. A core feature of BPD is identity disturbance, marked by a persistently unstable self-image and sense of self. Despite clinical recognition, the precise nature of identity disturbance remains ambiguous, with no clear consensus on its specific manifestations and measurable parameters. With the scoping review projected in this protocol, we aim to define what has been said in the literature about identity disturbance, its types, and methods of measurement. Study Design: Scoping review protocol. Methods: Included publications will comprise empirical and theoretical studies focusing on identity disturbance in individuals diagnosed with BPD. Databases will include PubMed, PsycINFO, Scopus, and Web of Science Core Collection, supplemented by Google for grey literature. Data will be screened by two reviewers and discrepancies will be resolved through discussion or a third reviewer if necessary. Extracted data will include study details, methodological data, definitions of identity, conceptualizations of identity disturbance, types of disturbance, and assessment tools. Conclusions: The forthcoming results will have the potential to make significant contributions to both theoretical and empirical knowledge on identity disturbance in BPD. It is expected that the results of the review will help to inform and improve therapeutic strategies, enabling more tailored and effective interventions for BPD patients with identity disturbance.