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Autistic traits in borderline personality Disorder: Relationship to interpersonal traumatic experiences.

Journal of psychiatric research2026

Galvez-Merlin Alejandra, Arqueros María, Fuentes-García Noelia, Diaz-González Sandra, de la Torre-Luque Alejandro, Lopez-Villatoro José Manuel, Díaz-Marsa Marina, Carrasco Jose Luis

What this study means for families

Researchers compared autism traits between 65 people with Borderline Personality Disorder and 40 people without mental health conditions. They found that people with BPD showed more autism-like traits and that these traits were linked to experiencing more interpersonal trauma (like abuse or bullying). This suggests autism traits might make someone more vulnerable to trauma, which could contribute to developing BPD.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Research summary

This comparative study examined autistic traits in 65 individuals with Borderline Personality Disorder (BPD) versus 40 controls using standardized autism assessments (AQ-10, SRS-2). The research investigated relationships between autistic traits and interpersonal trauma exposure. Results showed significantly higher autism scores in the BPD group on both measures (p<.04 for AQ-10, p<.001 for SRS-2). Within the BPD group, autistic traits were significant predictors of interpersonal trauma experiences (p<.001), including childhood physical/sexual abuse, adult rape, bullying, and mobbing.

The study suggests autistic features may increase vulnerability to interpersonal trauma, potentially contributing to BPD development and clinical presentation.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Key findings

  • 1

    BPD patients showed significantly higher autism scores than controls on both AQ-10 (p<.04) and SRS-2 (p<.001) measures

    Confidence: moderateRelevance: Suggests meaningful overlap between autism traits and BPD presentation
  • 2

    Autistic traits significantly predicted interpersonal trauma exposure in BPD patients (p<.001)

    Confidence: moderateRelevance: Indicates autism features may increase trauma vulnerability in this population

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Clinical implications

Clinicians should assess for autistic traits in BPD patients, particularly given increased trauma vulnerability. Understanding autism features may inform trauma-informed care approaches and treatment planning. Further research needed to establish causal relationships and clinical applications.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Limitations

Small sample size (65 BPD patients, 40 controls) limits generalizability. Cross-sectional design prevents causal conclusions about autism traits and trauma relationships. Study relies on self-report measures rather than clinical autism diagnosis.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Original abstract

Detecting autistic spectrum disorder (ASD) traits in BPD patients is challenging due to overlapping symptoms such as impulsivity, emotion instability, self-injury behavior and interpersonal difficulties. Theory of mind impairments and other ASD features may increase vulnerability to interpersonal trauma and therefore to BPD symptoms. This study examines ASD traits in BPD patients and their impact on interpersonal trauma exposure. 65 BPD patients and 40 controls were assessed using the Autism Spectrum Quotient (AQ 10) and the Social Responsiveness Scale (SRS-2). Interpersonal traumatic experiences were also collected (physical abuse in childhood, sexual abuse in childhood, rape in adulthood, school bullying and mobbing).

ASD scores were compared between patients and controls through a t-test for mean difference. The sex variable was controlled using ANCOVA. Finally, the relationship between ASD scores and interpersonal trauma was analyzed by using linear regression analysis. Patients with BPD had higher ASD scores for both the AQ-10 (p < .04) and the SRS-2 (p < .001) than the control group.

In the BPD group, ASD features were significant predictors for reporting interpersonal trauma experiences (p < .001). ASD traits are significantly present in BPD patients than in healthy subjects and are associated with the intensity of interpersonal trauma in BPD. According to these results, the clinical relevance of ASD traits in developing BPD and in the clinical manifestations of the disorder should be further investigated in greater samples.

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Evidence Grade

Emerging

limited

Grade assigned by AutismInsights based on study type and published abstract.

Study Details

Journal
Journal of psychiatric research
Year
2026
PMID
41192393
DOI
10.1016/j.jpsychires.2025.10.072

MeSH Terms

HumansFemaleMaleBorderline Personality DisorderAdultAutism Spectrum DisorderInterpersonal RelationsYoung AdultMiddle AgedPsychological TraumaPsychiatric Status Rating Scales