Summary: Patients diagnosed with Borderline Personality Disorder (BPD) are more likely to have repeated hospital visits than people with other mental health diagnoses. In a review of 86,740 emergency department and inpatient episodes involving 25,619 mental health patients across South Australian public hospitals from 2014 to 2019, researchers found that BPD has a measurable impact on hospital services and patient pathways.
The analysis revealed a link between the length of initial inpatient stays and the time until patients returned to hospital: shorter or certain lengths of stay were associated with faster readmission for people with BPD. These results point to the need for better care pathways, more accurate clinical recording, and targeted research into optimal treatment durations for this population.
Key Facts:
- People with BPD face a higher risk of repeated hospital presentations compared with patients diagnosed with other mental health conditions.
- The study reviewed 86,740 emergency department and inpatient episodes across South Australian public hospitals, focusing on links between a primary BPD diagnosis and hospital re-presentation.
- Initial inpatient length of stay was associated with time to readmission: certain longer stays were linked to earlier return to hospital than very short stays, emphasizing the importance of tailored treatment planning and care pathways.
Source: Flinders University
New research from Flinders University has found a clear association between a primary diagnosis of Borderline Personality Disorder (BPD) and recurrent hospital presentations.
The study examined how BPD diagnoses related to patterns of emergency department (ED) visits and inpatient admissions, and specifically how the length of an initial inpatient stay influenced the time until a patient next re-presented to hospital.
Researchers reviewed a cohort of 25,619 mental health patients who accounted for 86,740 ED and inpatient episodes across South Australian public hospitals between 1 January 2014 and 31 December 2019.
Lead author Dr David Smith, from the College of Medicine and Public Health, reports that patients with a primary diagnosis of BPD were more likely to return to hospital than patients with other mental health diagnoses. BPD is one of the most common personality disorders in Australia, affecting up to 5% of people at some stage, and it frequently co-occurs with conditions such as substance use disorders, depression, anxiety, and bipolar disorder.
People living with BPD often experience significant psychosocial difficulties, including problems with social functioning, employment and income, and they carry higher rates of self-harm and suicide. These complexities contribute to frequent ED presentations and admissions to mental health services, with reported mortality concerns in clinical literature.
Within the study cohort, roughly 4% of mental health patients were discharged from an ED or inpatient stay with BPD recorded as the primary diagnosis. Those patients showed a higher likelihood of subsequent hospital re-presentation compared with other diagnostic groups in the dataset.
Importantly, the study identified a relationship between initial inpatient length of stay and time to re-presentation: patients whose first inpatient admission exceeded 14 days returned to hospital, on average, 58 days sooner than patients whose initial stay was two days or less. This finding suggests that inpatient duration may be an important factor in subsequent care needs, and it signals the need for more detailed investigation into why different lengths of stay are linked to different outcomes.
Dr Smith recommends further research, including detailed pathway analyses, to determine which patients benefit from specific inpatient lengths of stay and which patterns of care are associated with improved outcomes. He emphasizes the importance of more accurate and consistent recording of BPD diagnoses and related presentations to support robust pathway evaluation.
A patient-centered mapping of hospital journeys—breaking care into distinct events such as clinical interventions and staff interactions—could help clinicians and managers better understand when care is effective and when it falls short. Such analyses should also address how sex and gender intersect with age, race, ethnicity and other sociocultural factors to influence outcomes for people with BPD.
The authors argue that synthesizing detailed pathway information with routine health data would provide deeper insight into patient journeys and inform service improvements. Building on existing resources, refining community-based services, and enhancing staff training could reduce emergency department presentations and hospital admissions and improve overall wellbeing among people with BPD.
Funding: The research was commissioned by the South Australian Borderline Personality Disorder Collaborative (contract number: SAH2019-1146) and funded by the Barossa Hills Fleurieu Local Health Network.
About this borderline personality disorder research news
Author: Sally Lauder
Source: Flinders University
Contact: Sally Lauder – Flinders University
Image: The image is credited to Neuroscience News
Original Research: Open access. “Recurrent Mental Health Presentations to Public Hospital Services: A Focus on Borderline Personality Disorder” by David Smith et al., published in Primary Care Companion for CNS Disorders.
Abstract
Recurrent Mental Health Presentations to Public Hospital Services: A Focus on Borderline Personality Disorder
Objective: To examine associations between patients exhibiting borderline personality disorder (BPD)–related symptoms and their hospital presentations, and to evaluate how inpatient length of stay (LOS) affects time to hospital re-presentation.
Methods: A retrospective cohort design investigated mental health emergency department visits and inpatient admissions for 13,320 men and 12,290 women, with follow-up from 1 January 2014 to 31 December 2019.
Results: Approximately 4% of mental health patients in the study were discharged with a primary diagnosis of BPD. Both male and female patients with BPD had a significantly higher risk of hospital re-presentation compared with other mental health diagnostic groups. Patients with BPD whose initial inpatient length of stay exceeded 14 days were, on average, readmitted 58 days sooner than those whose initial stay was less than two days.
Conclusions: The findings support the need for (a) more accurate recording of BPD and related presentations, (b) more detailed investigation of BPD care pathways, and (c) identification of subgroups who may benefit from specific inpatient lengths of stay to improve outcomes and reduce repeat hospital presentations.