Short answer · Medically reviewed summary · Last updated: 2026-05-08
Borderline personality disorder (BPD) is officially recognized under that name in the DSM-5, though it is sometimes referred to as Emotionally Unstable Personality Disorder (EUPD) in the ICD-10 and ICD-11 classifications. While historical terms like "latent schizophrenia" or "pseudoneurotic schizophrenia" appear in older literature, these are now considered obsolete and clinically inaccurate. Why does Borderline personality disorder (BPD) have multiple names? The nomenclature for Borderline personality disorder (BPD) has evolved significantly due to shifting clinical understandings of its etiology.
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Borderline personality disorder (BPD) is officially recognized under that name in the DSM-5, though it is sometimes referred to as Emotionally Unstable Personality Disorder (EUPD) in the ICD-10 and ICD-11 classifications. While historical terms like "latent schizophrenia" or "pseudoneurotic schizophrenia" appear in older literature, these are now considered obsolete and clinically inaccurate.
The nomenclature for Borderline personality disorder (BPD) has evolved significantly due to shifting clinical understandings of its etiology. Historically, the term "borderline" was coined by Adolf Stern in 1938 to describe patients who existed on the "border" between neurosis and psychosis. As our diagnostic criteria have refined, international medical bodies have adopted different frameworks, leading to the co-existence of labels like Emotionally Unstable Personality Disorder (EUPD), particularly within the World Health Organization's classification systems.
Medical professionals and researchers rely on standardized nomenclature to ensure consistent care and data reporting for Borderline personality disorder (BPD). The following classifications are currently used in clinical and research settings:
In older medical texts, you may encounter terms that are no longer used because they do not accurately reflect the current biopsychosocial model of Borderline personality disorder (BPD). These include "ambulatory schizophrenia," "borderline state," and "pseudoneurotic schizophrenia." Modern clinicians have moved away from these labels to reduce stigma and improve the precision of treatment plans for those living with Borderline personality disorder (BPD).
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