Borderline personality disorder (BPD) is characterized by instability in relationships, mood fluctuations, and erratic behavior. This study investigates the relationship between pathological personality traits and functional disability, the status of perceived social support in BPD, as well as its mediating role in this relationship. In this cross-sectional study, 192 Spanish women (BPD group, N = 97; healthy control group, N = 95) completed, through two online platforms, a battery of tests including: the Personality Inventory for DSM-5 Brief Form (PID-5-BF), the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) and the Perceived Social Support subscale of the Quality of Life Questionnaire (QLQ). The results show that perceived social support was significantly lower in the BPD group, which also presented a significantly higher disability score than the control group. Pathological personality traits affected functionality both directly and indirectly through perceived social support, as this variable was a significant mediator in both groups. We conclude that perceived social support is impaired in BPD patients, and enhancing it as a complementary therapy to evidence-based treatments could help preserve the functionality of patients while pathological traits are regulated. This study also encourages future research to delve into the relevance of other psychosocial variables on the functionality of subjects with BPD, and the need of enhancing them in therapy.
Borderline personality disorder (BPD) is a mental illness characterized by a pattern of instability in relationships, moods and behavior. Using two groups of women (clinical or diagnosed with BPD, N = 138; and control, with no physical or mental illness, N = 124) this study analyzed the differences between pathological personality traits, measured by the Personality Inventory for DSM-5 and different domains of quality of life (SF-36 and the WHODAS 2.0) as well as the mediating role of life satisfaction in personality traits and quality of life. Differences were found between the groups in pathological personality and quality of life. Moreover, many SF-36 dimensions were partially mediated by life satisfaction in both groups. Therefore, new treatments for BPD may include developing life satisfaction, palliating the effects of this disorder on quality of life, reducing its impact on day-to-day tasks.Resumen: El trastorno de personalidad límite (TPL) se caracteriza por inestabilidad en las relaciones, el humor y la conducta. Se analizaron en dos grupos de mujeres (clínico o con TPL, N = 138; y control, sin enfermedad física o mental, N = 124) las diferencias en rasgos patológicos de personalidad (evaluados con el Personality Inventory for DSM-5) y diferentes dominios de calidad de vida (SF-36 y WHODAS 2.0), así como el papel mediador de la satisfacción vital en las relaciones entre personalidad y calidad de vida. Se encontraron diferencias entre los grupos en personalidad patológica y calidad de vida. Además, varias dimensiones de calidad de vida del SF-36 estaban mediadas parcialmente por la satisfacción vital en ambos grupos. Por tanto, los tratamientos del TPL podrían incluir el desarrollo de satisfacción vital para paliar sus efectos en la calidad de vida de los que lo padecen, reduciendo su impacto en las tareas del día a día.
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