Comorbidity of borderline personality disorder with other personality disorders in psychiatric outpatients: how does it look at 2-year follow-up?

Key insights from studies on the stability of personality disorders in different age groups

While for decades, temporal stability has been conceived as a defining feature of personality disorders (PDs), cumulative findings appear to question the stability of PDs and PD symptoms over time. However, stability itself is a complex notion and findings are highly heterogenous. Building upon a literature search from a systematic review and meta-analysis, this narrative review aims to capture key findings in order to provide critical implications, both for clinical practice and future research. Taken together, this narrative review revealed that unlike previous assumptions, stability estimates in adolescence are comparable to stability estimates in adulthood and PDs and PD symptoms are not that stable. The extent of stability itself depends yet on various conceptual, methodological, environmental, and genetic factors. While findings were thus highly heterogenous, they all seem to converge in a notable trend towards symptomatic remission, except for high-risk-samples. This challenges the current understanding of PDs in terms of disorders and symptoms and argues instead in favor of the AMPD and ICD-11 reintroducing the idea of self and interpersonal functioning as the core feature of PDs.

Long-term stability of personality traits in a clinical psychiatric sample

Background: The aim of this study was to describe personality traits in psychiatric patients and to investigate whether these traits are stable over 13 years. Methods: A total of 95 individuals who were patients at a psychiatric outpatients' clinic in 2003 completed the Swedish universities Scales of Personality (SSP). Scores from 2003 were compared with SSP scores from 2016. Based on the current score on the comprehensive psychopathological rating scale - self rating for affective disorders (CPRS-S-A), the participants were divided into two groups representing 'good' and 'poor' current mental states, to investigate the effect of current mental state on reports of personality traits. Results: Out of 13 personality traits, 11 showed a significant change in mean T-score over the study interval. The group with lower CPRS-S-A scores showed a significant change in T-score for 10 traits, whereas in the group with higher CPRS-S-A scores only 3 traits showed a significant change. Conclusions: The findings support the theory that personality is changeable over the course of life, also in psychiatric patients. We do not know if persisting psychiatric symptoms halter change or if deviant personality traits cause psychiatric symptoms to continue.

Personality disorders: patient characteristics and level of outpatient treatment service

BACKGROUND

In this naturalistic study, patients with personality disorders (N = 388) treated at Stolpegaard Psychotherapy Center, Mental Health Services, Capital Region of Denmark were allocated to two different kinds of treatment: a standardized treatment package with a preset number of treatment hours (basic hospital service) and 2: a specialized treatment program for the most severely affected patients without a predetermined restricted number of treatment hours and significantly more individual psychotherapy (regional specialized hospital services).

AIMS

To investigate patient characteristics associated with clinicians' allocation of patients to the two different personality disorder services.

METHODS

Patient characteristics across eight domains were collected in order to study whether there were systematic differences between patients allocated to the two different treatments. Patient characteristics included measures of symptom severity, personality pathology, trauma and socio-demographic characteristics. Significance testing and binary regression analysis were applied to identify important predictors.

RESULTS

Patient characteristics on fifteen variables differed significantly, all in the expected direction, with patients in regional specialized hospital services showing more pathology and psychosocial problems. In the regression model, only age and two variables capturing psychosocial functioning remained significant predictors of allocation.

DISCUSSION

The finding that younger age was the most significant predictor of longer treatment replicates an earlier finding of allocation to treatment for personality disorder. Overall, this study therefore lends further support to the importance of demographic and social contextual factors in clinicians' allocation of patients to different treatment services for personality disorder.

The Effect of Borderline Personality Pathology on Outcome of Cognitive Behavior Therapy

Cognitive behavioral therapy (CBT) is an evidence-based psychotherapeutic approach which has been shown to be an effective intervention for most psychiatric disorders. There are conflicting data in the literature regarding whether a comorbid personality disorder worsens the prognosis of CBT for depression, anxiety, and other complaints. This study examined data collected before and after courses of CBT for patients with significant borderline (n=39, 11.5%) or obsessive-compulsive (n=66, 19.4%) personality pathology or no personality disorder (n=235, 69.1%). A diagnosis of personality pathology was not a significant predictor of outcome in CBT as measured by the reliable change index. However, patients with borderline personality pathology did demonstrate a greater response to CBT than other patients in terms of improvement on several measures of symptoms. Patients with borderline personality pathology appear to enter therapy with greater subjective depression and interpersonal difficulty than other patients but achieve larger gains during therapy. Implications and directions for future research are discussed.