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Free Resource: What Is Borderline Personality Disorder (BPD)?

Borderline personality disorder (BPD) is a Cluster B personality disorder that causes unstable relationships, emotions, and self-concept. Learn about BPD’s symptoms, link to ADHD, treatment options, and more.

Borderline personality disorder (BPD) is characterized by instability in self-image, relationships, and emotions.

BPD is estimated to be the third most prevalent personality disorder, affecting about 1.6% of the global population1. Up to 20% of inpatient psychiatric patients have BPD, suggesting that people with BPD are more likely to require intensive mental health care2.

BPD is one of 10 personality disorders listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Along with histrionic, antisocial, and narcissistic personality disorders, BPD is a Cluster B disorder, which causes affected individuals to appear erratic, emotional, or dramatic.

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View Article Sources

1Sansone, R. A., & Sansone, L. A. (2011). Personality disorders: a nation-based perspective on prevalence. Innovations in clinical neuroscience, 8(4), 13–18.
2Chapman J, Jamil RT, Fleisher C. Borderline Personality Disorder. StatPearls.