Differentiating Borderline Personality Disorder and Narcissistic Personality Disorder: A Comprehensive Analysis (Independent Report)
Index:
- Introduction
- Borderline Personality Disorder (BPD) is defined within the DSM-5-TR
- Narcissistic Personality Disorder (NPD) is defined in the DSM-5-TR
- Both BPD and NPD are characterized by difficulties in emotional regulation
- Significant point of divergence between BPD and NPD
- Core motivations and underlying psychological needs differ significantly between BPD and NPD
- Several key factors differentiate BPD from NPD
- Origins and BPD / NPD Risk Factors
- Distinguishing between BPD and NPD can be challenging
- Conclusion
- Works Cited / References
- Report Compiler
1. Introduction
Borderline Personality Disorder (BPD) and Narcissistic Personality Disorder (NPD) represent complex mental health conditions categorized within the cluster B personality disorders in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5/DSM-5-TR). While both disorders can manifest in challenging interpersonal behaviors and significant emotional dysregulation, it is crucial to recognize that they are distinct psychiatric entities with differing underlying psychological mechanisms 1. A thorough understanding of the nuances that differentiate these conditions is paramount for accurate diagnosis, effective treatment planning, and ultimately, improved management and outcomes for affected individuals. The frequent conflation of BPD and NPD, despite their discrete diagnostic criteria, suggests a potential overlap in certain outward behavioral presentations or a general lack of detailed understanding regarding these complex disorders. Therefore, a comprehensive comparative analysis is essential to delineate their unique characteristics and provide clarity for clinicians and researchers alike 1. Furthermore, the clinical and colloquial use of the term "borderline narcissist" 1 indicates the possibility of comorbidity or the presence of traits from both disorders within a single individual. This potential overlap further complicates the process of differential diagnosis and emphasizes the necessity for precise definitions and clearly defined differentiating factors between BPD and NPD.
2. Borderline Personality Disorder (BPD) is defined within the DSM-5-TR
Borderline Personality Disorder (BPD) is defined within the DSM-5-TR as a pervasive pattern of instability in interpersonal relationships, self-image, and affects, along with marked impulsivity that begins by early adulthood and is present across a variety of contexts 6. For a diagnosis of BPD to be made, an individual must exhibit five or more of the following nine criteria: (1) frantic efforts to avoid real or imagined abandonment; (2) a pattern of unstable and intense interpersonal relationships characterized by alternating between extremes of idealization and devaluation; (3) identity disturbance, manifested as a markedly and persistently unstable self-image or sense of self; (4) impulsivity in at least two areas that are potentially self-damaging, such as spending, substance abuse, reckless driving, sex, or binge eating; (5) recurrent suicidal behavior, gestures, or threats, or self-mutilating behavior; (6) affective instability due to a marked reactivity of mood, for example, intense episodic dysphoria, anxiety, or irritability usually lasting a few hours and rarely more than a few days; (7) chronic feelings of emptiness; (8) inappropriate, intense anger or difficulty controlling anger, such as frequent displays of temper, constant anger, or recurrent physical fights; and (9) transient, stress-related paranoid ideation or severe dissociative symptoms 6. It is important to note that the DSM-5 also includes an alternative dimensional model for diagnosing BPD, which necessitates the presence of moderate or greater impairment in personality functioning alongside specific maladaptive traits 7. The historical understanding of BPD has evolved significantly. Initially, the term "borderline" was used to describe patients who did not neatly fit into the existing diagnostic categories of neurosis or psychosis 6. The formal recognition of BPD as a distinct diagnostic entity occurred with the publication of the DSM-III in 1980, marking a significant shift in psychiatric understanding and leading to increased research and refined diagnostic criteria in subsequent editions 6. This historical progression underscores the ongoing refinement of psychiatric classifications and the critical importance of adhering to the current DSM criteria for achieving accurate diagnoses.
3. Narcissistic Personality Disorder (NPD) is defined in the DSM-5-TR
Narcissistic Personality Disorder (NPD) is defined in the DSM-5-TR as a pervasive pattern of grandiosity (in fantasy or behavior), a need for admiration, and a lack of empathy that begins by early adulthood and is present across a variety of contexts 11. A diagnosis of NPD requires the presence of five or more of the following nine criteria: (1) a grandiose sense of self-importance, ts; (2) a preoccupation with fantasies of unlimited success, power, brilliance, beauty, or ideal love; (3) a belief that one is "special" and unique and can only be understood by, or should associate with, other special or high-status people or institutions; (4) a need for excessive admiration; (5) a ons; (6) interpersonally exploitive behavior, i.e., taking advantage of others to achieve one's own ends; (7) a lack of empathy, i.e., unwillingness to recognize or identify with the feelings and needs of others; (8) envy of others or a belief that others are envious of them; and (9) a demonstration of arrogant and haughty behaviors or attitudes 11. It is also recognized that NPD can present in different subtypes, most notably grandiose (or overt) narcissism, characterized by outward grandiosity and attention-seeking, and vulnerable (or covert) narcissism, which may involve hypersensitivity, defensiveness, and a more fragile ego 11. The DSM-5 criteria for NPD have faced criticism for their primary emphasis on these external manifestations of grandiosity. This focus may not fully capture the internal challenges and vulnerabilities experienced by individuals with NPD, particularly those with the vulnerable subtype who may struggle with significant self-criticism, insecurity, shame, and fear 12. This limitation suggests that clinicians need to be aware of a broader spectrum of narcissistic presentations beyond the stereotypical overt manifestations.
4. Both BPD and NPD are characterized by difficulties in emotional regulation
Both BPD and NPD are characterized by difficulties in emotional regulation 1. In BPD, this often manifests as rapid and intense mood swings that can be triggered by a perceived fear of abandonment 1. Individuals with BPD may experience intense episodes of dysphoria, anxiety, or irritability that can shift quickly 6. They may also seek external validation and support to manage these intense emotional states 22. In contrast, while individuals with NPD also experience emotional dysregulation, their strong emotions, such as anger or anxiety, are typically triggered by perceived threats to their self-esteem rather than a fear of abandonment 1. The emotional landscape of NPD might appear less overtly volatile, with the exception of intense rage reactions when their sense of superiority or entitlement is challenged 22. The fundamental difference lies in the primary trigger and the function of seeking external input. BPD's emotional reactivity is deeply rooted in attachment needs and the fear of relational loss, whereas NPD's emotional responses are primarily driven by the need to protect and maintain a grandiose self-perception.
5.Significant point of divergence between BPD and NPD
A significant point of divergence between BPD and NPD lies in their respective self-images 1. Individuals with BPD typically struggle with an unstable and often negative self-image 1. They may report feeling unsure of their identity, experiencing feelings of worthlessness or inadequacy, and undergoing frequent shifts in their values, goals, and self-perception 3. Conversely, NPD is characterized by a grandiose sense of self-importance 1. Individuals with NPD often believe they are superior, unique, and entitled to special treatment, frequently exaggerating their achievements and talents 1. However, this outward grandiosity often serves as a facade to protect a fragile underlying self-esteem 2. This contrast in self-perception – the core instability and negativity in BPD versus the outward grandiosity masking potential insecurity in NPD – represents a fundamental diagnostic distinction.
Both BPD and NPD are associated with significant difficulties in maintaining healthy interpersonal relationships 1. In BPD, these difficulties often stem from an intense fear of abandonment, leading to unstable and intense relationships characterized by a pattern of idealizing and then devaluing others (splitting) 1. Individuals with BPD often have a strong desire for intimacy and connection, but their intense emotions and hypersensitivity can create turmoil in their relationships 1. In contrast, individuals with NPD also struggle in relationships, but primarily due to their self-centeredness, lack of empathy, and tendency to exploit others for their own needs or to gain admiration 1. While they may initially be charming, their lack of empathy and need for control often lead to difficulties in forming and maintaining deep, lasting connections 2. The underlying motivations for these relational difficulties are distinct: BPD's instability is driven by a fear of abandonment and emotional volatility, whereas NPD's difficulties stem from a lack of empathy and a self-serving orientation toward others.
6. Core motivations and underlying psychological needs differ significantly between BPD and NPD
The core motivations and underlying psychological needs differ significantly between BPD and NPD. In BPD, a primary driving force is the intense fear of abandonment and rejection 1. This fear can lead to desperate actions to prevent perceived or actual separation 1. Individuals with BPD also have a fundamental need for stable and supportive relationships and a desire to avoid feelings of loneliness 6. Chronic feelings of emptiness are another significant underlying psychological experience 1. Furthermore, there is a strong motivation to regulate intense emotions and find relief from distress, often manifesting in impulsive and self-harming behaviors 1. The development of a stable and coherent sense of self is also a fundamental psychological need in BPD 1. These core motivations in BPD reveal a deep vulnerability and reliance on external validation and relationships for emotional equilibrium and self-definition.
In contrast, the primary motivations in NPD are centered around a need for excessive admiration and a sense of grandiosity and superiority 1. This need often stems from an underlying fragile ego and feelings of insecurity 2. Individuals with NPD possess a sense of entitlement and expect preferential treatment from others 1. They are motivated to maintain a positive and inflated self-image and will actively avoid any perception of weakness or inferiority 23. Narcissists may also exploit others as a source of "narcissistic supply" to bolster their self-esteem and seek constant validation through admiration, attention, influence, and control 1. The core motivations in NPD thus revolve around maintaining a grandiose self-perception and seeking external validation to mask underlying insecurities, contrasting with BPD's primary drive to avoid abandonment and seek connection.
7. Several key factors differentiate BPD from NPD
Several key factors differentiate BPD from NPD. The fundamental nature of their insecurity differs significantly. In BPD, the primary insecurity is a profound fear of abandonment and being left alone 1. Conversely, the primary insecurity in NPD is a deep-seated fear of being exposed as inadequate, flawed, or unworthy, which is often concealed by an outward display of grandiosity 2. This difference in the focus of their insecurity is a crucial differentiating factor.
Their reactions to criticism also differ. Individuals with BPD are typically highly sensitive to criticism or negative feedback, often experiencing intense feelings of fear, shame, self-loathing, and may devalue the person offering the criticism 1. In contrast, while individuals with NPD are also sensitive to criticism, they often react with outward rage, contempt, denial, or by devaluing the critic to protect their inflated self-image 1. Internally, however, criticism can trigger feelings of shame, degradation, and emptiness in individuals with NPD 16.
Their patterns of relating to others also present key differences. BPD is characterized by a pattern of seeking intense attachment and fearing rejection, resulting in unstable relationships marked by idealization and devaluation 1. Individuals with BPD often exhibit a genuine interest in others, albeit one that can be overshadowed by their fear of abandonment 22. In contrast, NPD involves a pattern of exploiting others for personal gain and admiration, often accompanied by a significant lack of empathy 1. Individuals with NPD may not genuinely seek to connect with others on an emotional level, often viewing relationships as opportunities for exploitation, impression management, or manipulation 22.
8. Origins and NPF / NPD Risk Factors
The origins and risk factors for both disorders have been investigated. BPD is currently understood to arise from a complex interplay of genetic factors and adverse childhood experiences that affect brain development 2. Genetic studies suggest a hereditary component related to traits like impulsivity and mood dysregulation 6. Environmental factors, particularly childhood trauma such as emotional, physical, or sexual abuse, neglect, early separation from caregivers, and exposure to instability or parental psychopathology, are significant risk factors 2. Neurobiological factors, including differences in brain regions involved in emotional regulation and impulse control, are also implicated 6. This strong link between early adversity and BPD highlights the profound impact of developmental experiences on the emergence of the disorder.
The origins of NPD are believed to be multifactorial, involving a combination of genetic, environmental, and potentially neurobiological influences 2. A genetic predisposition is suggested by the increased prevalence of NPD in individuals with a family history of the disorder 17. Parenting styles are thought to play a significant role, with both overindulgent/overprotective parenting and neglectful/abusive parenting being potential contributing factors 2. Cultural factors that emphasize individualism and personal achievement may also contribute 17. Research has indicated possible differences in brain structure and function in areas associated with self-awareness, emotional processing, and empathy 11. The potential role of both extremes of parenting in the development of NPD suggests that a lack of balanced and attuned responsiveness from caregivers during critical developmental periods may disrupt the formation of a healthy self-concept.
Diagnosing BPD involves a comprehensive clinical evaluation based on the DSM-5-TR criteria, requiring the presence of at least five of the nine listed symptoms 6. This process typically includes a detailed interview, a mental health evaluation, and a review of the individual's personal history and reported symptoms 6. Screening tools like the McLean Screening Instrument for BPD and the Zanarini rating scale may be utilized 6. Diagnosis usually occurs in late adolescence or early adulthood 9. Diagnosing NPD similarly relies on a clinical evaluation based on the DSM-5-TR criteria, with at least five of the nine symptoms needing to be present 11. This involves discussions about the individual's life and interactions with others 32. A significant challenge in diagnosing NPD is that individuals with the disorder often lack awareness of their condition and may be unlikely to seek treatment or acknowledge any problems 11. Furthermore, the presentation of NPD can be highly variable 14.
9. Distinguishing between BPD and NPD can be challenging
Distinguishing between BPD and NPD can be challenging due to some overlapping features, such as emotional dysregulation, impulsivity, and difficulties in interpersonal relationships 1. However, it is crucial to focus on the underlying motivations and the nature of the self-image. BPD is primarily driven by a fear of abandonment, while NPD is driven by a need for admiration 1. The self-image in BPD is typically unstable and associated with feelings of worthlessness, whereas in NPD, it is grandiose, albeit often masking underlying fragility 1. Empathy levels also differ, often being present in BPD (though it can fluctuate with emotional states) and consistently lacking in NPD 1. Self-harm and reports of chronic emptiness are more common in BPD than in NPD 1.
While both disorders can involve manipulative behaviors, the underlying motivation differs (avoiding abandonment in BPD vs. maintaining grandiosity in NPD) 1. The potential for the co-occurrence of BPD and NPD adds further complexity to the diagnostic process 1.
| Feature |
Borderline Personality Disorder (BPD) |
Narcissistic Personality Disorder (NPD) |
| Core Fear |
Abandonment | Being exposed as inadequate |
| Self-Image |
Unstable, feelings of worthlessness |
Exploitative, lacking empathy |
| Motivation |
Avoid abandonment, regulate intense emotions |
Seek admiration, maintain superiority |
| Reaction to Criticism |
Avoid abandonment, regulate intense emotions | Seek admiration, maintain superiority |
| Empathy |
Often present, may fluctuate |
Consistently lacking |
| Self-Harm/Suicidality |
More common | Less common |
| Underlying Need |
Connection, stability | Admiration, power |
| Interpersonal Relationships |
Unstable, intense, idealization/devaluation (splitting) | Exploitative, lacking empathy |
10. ConclusionIn conclusion, while Borderline Personality Disorder and Narcissistic Personality Disorder share some similarities in their outward presentation, their underlying psychological mechanisms and core features are fundamentally distinct. BPD is characterized by a deep-seated fear of abandonment, an unstable self-image, and intense, fluctuating relationships. In contrast, NPD is driven by a need for admiration, a grandiose sense of self, and a lack of empathy in interpersonal interactions. Accurate differential diagnosis, focusing on the individual's core fears, self-perception, and relational patterns, is essential for guiding appropriate and effective treatment interventions tailored to the specific needs of each disorder, ultimately leading to improved outcomes.
11. Works Cited / References
1. Borderline vs. Narcissistic Personality Disorder - Charlie Health, accessed March 23, 2025,
https://www.charliehealth.com/post/borderline-personality-disorder-vs-narcissistic-personality-disorder 2. Comparing BPD and NPD - Stephanie Lyn Life Coaching, accessed March 23, 2025,
https://www.stephanielynlifecoaching.com/blog/differences-and-similarities-borderline-personality-disorder-and-narcissistic-personality-disorder 3. BPD Vs. NPD: How Borderline & Narcissistic Personality Disorders Differ, accessed March 23, 2025,
https://www.choosingtherapy.com/bpd-vs-npd/ 4. Borderline Personality Disorder vs. Narcissism — Talkspace, accessed March 23, 2025,
https://www.talkspace.com/mental-health/conditions/articles/borderline-personality-disorder-vs-narcissism/ 5. Borderline Personality Disorder vs Narcissism - URP, accessed March 23, 2025,
https://urpbehavioralhealth.com/blog/borderline-personality-disorder-vs-narcissism/ 6. Borderline Personality Disorder - StatPearls - NCBI Bookshelf, accessed March 23, 2025,
https://www.ncbi.nlm.nih.gov/books/NBK430883/ 7. Borderline personality disorder: a comprehensive review of ..., accessed March 23, 2025,
https://pmc.ncbi.nlm.nih.gov/articles/PMC10786009/ 8. Diagnostic Criteria - Australian BPD Foundation, accessed March 23, 2025,
https://www.bpdfoundation.org.au/diagnostic-criteria.php 9. Borderline Personality Disorder: DSM-5 Criteria, Comorbidities, and ..., accessed March 23, 2025,
https://www.medcentral.com/psychiatry/borderline-personality-disorder/dsm-criteria-comorbidities-and-treatments 10. Borderline Personality Disorder: Practice Essentials, Background ..., accessed March 23, 2025,
https://emedicine.medscape.com/article/913575-overview 11. Narcissistic Personality Disorder - StatPearls - NCBI Bookshelf, accessed March 23, 2025,
https://www.ncbi.nlm.nih.gov/books/NBK556001/ 12. Narcissistic Personality Disorder: A Basic Guide for Providers - McLean Hospital, accessed March 23, 2025,
https://www.mcleanhospital.org/npd-provider-guide 13. Narcissistic Personality Disorder: Background, Etiology, Pathophysiology, accessed March 23, 2025,
https://emedicine.medscape.com/article/1519417-overview 14. Narcissistic Personality Disorder: Diagnostic and Clinical Challenges | American Journal of Psychiatry, accessed March 23, 2025,
https://psychiatryonline.org/doi/10.1176/appi.ajp.2014.14060723 15. Narcissistic Personality Disorder - PsychDB, accessed March 23, 2025,
https://www.psychdb.com/personality/narcissistic 16. What Is Narcissistic Personality Disorder? - American Psychiatric Association, accessed March 23, 2025,
https://www.psychiatry.org/news-room/apa-blogs/what-is-narcissistic-personality-disorder 17. Causes of Narcissistic Personality Disorder: Childhood, Genes ..., accessed March 23, 2025,
https://psychcentral.com/disorders/what-causes-narcissistic-personality-disorder 18. Narcissistic Personality Disorder: Understanding the Origins and Causes, Consequences, Coping Mechanisms, and Therapeutic Approaches - ECronicon, accessed March 23, 2025,
https://ecronicon.net/ecpp/narcissistic-personality-disorder-understanding-the-origins 19. Narcissistic personality disorder: Symptoms, diagnosis, and treatment - Medical News Today, accessed March 23, 2025,
https://www.medicalnewstoday.com/articles/9741 20. Narcissistic Personality Disorder vs. Borderline Personality Disorder: Understanding the Differences and Overlaps | Grouport Journal, accessed March 23, 2025,
https://www.grouporttherapy.com/blog/narcissist-vs-bpd 21. BPD or NPD: Which One Am I Dealing With? - Empathy Health Clinic, accessed March 23, 2025,
https://empathyhealthclinic.com/blog/bpd-vs-npd/ 22. Borderline and Narcissistic Personality: Differences and Similarities | Psychology Today, accessed March 23, 2025,
https://www.psychologytoday.com/us/blog/5-types-people-who-can-ruin-your-life/202102/borderline-and-narcissistic-personality 23. Borderline Personality vs Narcissistic Personality Disorder - MentalHealth.com, accessed March 23, 2025,
https://www.mentalhealth.com/library/borderline-vs-narcissistic-personality-disorder 24. BPD vs. NPD: Differences and more - Medical News Today, accessed March 23, 2025,
https://www.medicalnewstoday.com/articles/bpd-vs-npd 25. Causes - Borderline personality disorder - NHS, accessed March 23, 2025,
https://www.nhs.uk/mental-health/conditions/borderline-personality-disorder/causes/ 26. Borderline Personality Disorder: Causes, Symptoms & Treatment - Cleveland Clinic, accessed March 23, 2025,
https://my.clevelandclinic.org/health/diseases/9762-borderline-personality-disorder-bpd 27. Borderline personality disorder - Symptoms and causes - Mayo Clinic, accessed March 23, 2025,
https://www.mayoclinic.org/diseases-conditions/borderline-personality-disorder/symptoms-causes/syc-20370237 28. Borderline Personality Disorder - NCBI Bookshelf, accessed March 23, 2025,
https://www.ncbi.nlm.nih.gov/books/NBK55415/ 29. Borderline Personality Disorder: What You Need To Know | McLean ..., accessed March 23, 2025,
https://www.mcleanhospital.org/essential/bpd 30. Understanding How Borderline Personality Disorder Is Diagnosed, accessed March 23, 2025,
https://www.mcleanhospital.org/treatment/bpd-diagnosis 31. Diagnosis - National Education Alliance for Borderline Personality Disorder, accessed March 23, 2025,
https://www.borderlinepersonalitydisorder.org/what-is-bpd/ 32. Narcissistic Personality Disorder: Symptoms & Treatment - Cleveland Clinic, accessed March 23, 2025,
https://my.clevelandclinic.org/health/diseases/9742-narcissistic-personality-disorder 33. Narcissistic personality disorder - Symptoms and causes - Mayo Clinic, accessed March 23, 2025,
https://www.mayoclinic.org/diseases-conditions/narcissistic-personality-disorder/symptoms-causes/syc-20366662 34. Abusive Behaviors: Differences Between BPD and NPD - Psych Central, accessed March 23, 2025,
https://psychcentral.com/disorders/the-differences-between-abusers-with-narcissistic-personality-disorder-vs-borderline-personality-disorder 35. Narcissistic personality disorder - Mosaic Life Care, accessed March 23, 2025,
https://www.mymlc.com/health-information/diseases-and-conditions/n/narcissistic-personality-disorder2/?section=Risk%20factors 36. Narcissistic Personality Disorder Symptoms, Causes & Treatment | Sheppard Pratt, accessed March 23, 2025,
https://www.sheppardpratt.org/knowledge-center/condition/narcissistic-personality-disorder/ 37. Narcissistic Personality Disorder: Traits, Causes, Treatment - Healthline, accessed March 23, 2025,
https://www.healthline.com/health/narcissistic-personality-disorder 38. www.borderlinepersonalitydisorder.org, accessed March 23, 2025,
https://www.borderlinepersonalitydisorder.org/wp-content/uploads/2013/11/NPD-Basic-Second-Edition-In-Print-03-2016.pdf 39. Overlaps in Borderline Personality Disorder and Narcissism - Overcomers Counseling, accessed March 23, 2025,
https://overcomewithus.com/narcissist-personality/overlaps-in-borderline-personality-disorder-and-narcissism 40. Types of mental health problems | BPD causes - Mind, accessed March 23, 2025,
https://www.mind.org.uk/information-support/types-of-mental-health-problems/borderline-personality-disorder-bpd/causes/ 41. 6 Reasons Why Narcissists Try to Appear Caring and Helpful, accessed March 23, 2025,
https://psychcentral.com/blog/psychology-self/2020/05/narcissists-generosity 42. 7 Hidden Principles That Motivate Narcissists | Psychology Today, accessed March 23, 2025,
https://www.psychologytoday.com/us/blog/narcissism-demystified/201905/7-hidden-principles-motivate-narcissists 43. What are the psychological reasons behind narcissistic personality ..., accessed March 23, 2025,
https://www.reddit.com/r/mentalhealth/comments/1az0any/what_are_the_psychological_reasons_behind/ 44. Loving Attraction Between Narcissistic and Borderline Traits | Psychology Today, accessed March 23, 2025,
https://www.psychologytoday.com/us/blog/an-interpersonal-lens/202502/loving-attraction-between-narcissistic-and-borderline-traits 45. Can a NPD and BPD Relationship Work? - SAMH - Simcoe Addiction and Mental Health, accessed March 23, 2025,
https://www.simcoerehab.ca/2023/04/21/can-a-npd-and-bpd-relationship-work/ 46. Borderline and Narcissist Relationship: 35 Signs You're In One - BPD Beautiful, accessed March 23, 2025,
https://www.bpdbeautiful.com/35-signs-youre-in-a-borderline-and-narcissist-relationship-bpd-and-narcissist-couple/ 47. Borderline Personality Disorder - What is BPD? - SAMHSA, accessed March 23, 2025,
https://www.samhsa.gov/mental-health/what-is-mental-health/conditions/borderline-personality-disorder 48. Borderline Personality Disorder Causes & Effects - San Jose Behavioral Health Hospital, accessed March 23, 2025,
https://www.sanjosebh.com/disorders/borderline-personality/causes-effects/ 49. Borderline Personality Disorder Causes & Effects - River Place Behavioral Health Hospital, accessed March 23, 2025,
https://www.riverplacebh.com/disorders/borderline-personality/symptoms-effects/ 50. Borderline Personality Disorder - National Institute of Mental Health (NIMH), accessed March 23, 2025,
https://www.nimh.nih.gov/health/publications/borderline-personality-disorder 51. What is borderline personality disorder (BPD)? - Mind, accessed March 23, 2025,
https://www.mind.org.uk/information-support/types-of-mental-health-problems/borderline-personality-disorder-bpd/about-bpd/ 52. Borderline and Narcissistic Personality: Differences and Similarities | Psychology Today, accessed March 23, 2025,
https://www.psychologytoday.com/intl/blog/5-types-people-who-can-ruin-your-life/202102/borderline-and-narcissistic-personality 53. Differential Diagnosis, accessed March 23, 2025,
http://www.appstate.edu/~hillrw/narcissism/differentialdiagnosis.html 54. Narcissistic Personality Disorder Differential Diagnoses - Medscape Reference, accessed March 23, 2025,
https://emedicine.medscape.com/article/1519417-differential 55. www.nhs.uk, accessed March 23, 2025,
https://www.nhs.uk/mental-health/conditions/borderline-personality-disorder/causes/#:~:text=being%20a%20victim%20of%20emotional,drink%20or%20drug%20misuse%20problem 56. goodhealthpsych.com, accessed March 23, 2025,
https://goodhealthpsych.com/blog/understanding-borderline-and-narcissistic-personality-traits/#:~:text=At%20their%20core%20both%20conditions,anger%20or%20fear%20of%20abandonment.
