Cluster B (dramatic/emotional/erratic): histrionic features excessive emotionality and attention-seeking; narcissistic features grandiosity, need for admiration, and lack of empathy.
Also known as: histrionic PD, narcissistic PD, NPD, HPD, cluster B
Overview
DSM-5-TR Cluster B personality disorders are 'dramatic, emotional, or erratic.' Histrionic PD (HPD): pervasive excessive emotionality and attention-seeking, beginning by early adulthood. Narcissistic PD (NPD): pervasive pattern of grandiosity (fantasy or behavior), need for admiration, and lack of empathy. (Borderline and antisocial PDs are also Cluster B and covered in separate entries.) All Cluster B disorders begin by early adulthood, are pervasive across contexts, and cause distress or impairment.
Epidemiology
Histrionic PD ~1-2% community prevalence; female predominance in clinical samples (likely reflects gender bias as well as true prevalence). Narcissistic PD ~0-6% (NESARC ~6%, other studies lower); male predominance (~50-75% male).
Try a board-style Histrionic and Narcissistic Personality Disorders question
Real questions from the FirstPassPA bank, with the full explanation. Pick an answer — no signup, no email.
Question 1PsychiatryMedium
A 34-year-old man is referred to a mental health clinic after repeated conflict with coworkers. He describes himself as the most talented person at his firm, expresses anger that his "obvious brilliance" goes unrecognized, and states he can only relate to people of equally high status. He shows little awareness of how his demands affect others and reacts with contempt when his ideas are questioned. These traits have been present and pervasive across work and personal relationships since his early 20s. He denies discrete episodes of elevated mood, decreased need for sleep, racing thoughts, depressed mood, or substance use, and his mental status exam is otherwise unremarkable. Which of the following is the most appropriate initial management?
ASertraline pharmacotherapy
BAripiprazole pharmacotherapy
CWorkplace mediation referral
DIndividual psychotherapy
EAnger-management group
Reveal answer & full explanation
Correct answer: D — Individual psychotherapy
ASertraline pharmacotherapy
BAripiprazole pharmacotherapy
CWorkplace mediation referral
DIndividual psychotherapy✓
EAnger-management group
Why Individual psychotherapy is correct
This vignette describes narcissistic personality disorder (grandiosity, need for admiration, lack of empathy, entitlement), a trait-stable Cluster B pattern that is pervasive across contexts and present since early adulthood.
Individual psychotherapy is the mainstay first-line treatment for both narcissistic and histrionic personality disorders; psychodynamic, mentalization-based, transference-focused, or schema approaches build tolerance for empathy, vulnerability, and realistic self-appraisal.
No medication is FDA-approved for either disorder; pharmacotherapy is reserved for comorbid mood, anxiety, substance, or eating disorders, none of which is present here.
Why the others are wrong
Sertraline pharmacotherapy — an SSRI is appropriate only for a comorbid depressive or anxiety disorder. It can treat depression in narcissistic personality disorder but not the underlying personality disorder, and this patient has no current mood or anxiety syndrome.
Anger-management group — a skills group aimed at his outbursts may reduce workplace friction, but it leaves the pervasive grandiosity, entitlement, and empathic failure untreated and is too narrow to serve as initial management of a personality disorder.
Workplace mediation referral — mediation frames the problem as a dispute with his coworkers, yet the same trait pattern is present in his personal relationships and would persist unchanged after any workplace agreement.
Aripiprazole pharmacotherapy — an atypical antipsychotic may seem to fit his inflated self-view and hostility, but his grandiosity is a stable trait rather than a delusion and his mental status exam shows no psychotic features; no medication is approved for or reliably improves the core traits of narcissistic personality disorder.
That's 1. Get 7,700+ more.
Unlock the full FirstPassPA bank: 7,700+ board-style questions, flashcards, and an AI tutor that explains every answer. Your 7-day free trial includes everything, and there's no credit card required.
You've read your 2 free diagnosis previews. Create your free account to unlock the full Histrionic and Narcissistic Personality Disorders (Cluster B) outline — plus all 514 diagnoses, 7,700+ board-style questions, flashcards, and an AI tutor. Your 7-day free trial includes everything, and there's no credit card required.
Cultural and developmental shaping (narcissistic traits can be normative in late adolescence)
Pathophysiology
Heritable component substantial. NPD: dysregulated self-esteem regulation with fragile underlying self-image; some neuroimaging shows reduced gray matter in regions linked to empathy. HPD: hypersensitivity to attention and reward; high extraversion and emotional reactivity.
Clinical presentation
Symptoms
Histrionic PD (≥5 of): uncomfortable when not the center of attention; inappropriately seductive or provocative behavior; rapidly shifting, shallow emotions; uses physical appearance to draw attention; impressionistic speech lacking detail; theatrical, exaggerated emotional expression; suggestible; considers relationships more intimate than they actually are
Narcissistic PD (≥5 of): grandiose sense of self-importance; fantasies of unlimited success, power, brilliance, beauty, or ideal love; believes they are special and can only be understood by other special or high-status people; requires excessive admiration; sense of entitlement; interpersonally exploitative; lacks empathy; envious of others or believes others envy them; arrogant, haughty behavior
Differential diagnosis
Borderline PD — Affective instability, fear of abandonment, self-harm, identity diffusion; HPD may make suicidal gestures or threats to gain attention but lacks BPD's chronic emptiness, identity diffusion, and recurrent self-harm
Antisocial PD — Deceit and rule-violation for personal gain; NPD seeks admiration rather than instrumental gain
Bipolar disorder, manic/hypomanic — Episodic grandiosity, decreased need for sleep, racing thoughts; PD is trait-stable
Substance-induced grandiosity — Stimulants; temporal link
Normative developmental narcissism — Common in adolescents, resolves with maturation
Diagnostic workup
Diagnostic criteria
General PD criteria + ≥5 disorder-specific items by early adulthood; pervasive; impairment; not better explained by other disorder or substance.
Labs
Clinical diagnosis; targeted labs for comorbid mood/anxiety/substance disorders
Imaging
Not indicated
Diagnostic algorithm
Disorder
Core feature
Self-image
Key clinical risk
First-line approach
Histrionic
Excessive emotionality, attention-seeking
Depends on external admiration
Suggestibility, impulsive sexuality, somatization
Supportive / psychodynamic psychotherapy
Narcissistic (grandiose)
Grandiosity, entitlement, low empathy
Inflated, fragile
Suicidality after narcissistic injury
Mentalization / transference-focused therapy
Narcissistic (vulnerable)
Hypersensitivity, shame, envy
Inflated yet covertly fragile
Depression, suicidality
Same as grandiose; supportive elements emphasized
Borderline (comparison)
Affective and interpersonal instability
Diffuse, unstable
Self-harm, completed suicide
DBT / mentalization-based therapy
Comparison of Cluster B disorders covered in this entry, with borderline included for contrast.
Treatment
First-line
Individual psychotherapy is the mainstay
HPD: psychodynamic, supportive, or cognitive therapy targeting attention-seeking patterns and shallow emotional regulation
NPD: psychodynamic, mentalization-based, transference-focused, or schema therapy; aim to build tolerance for empathy, vulnerability, and realistic self-appraisal
Group therapy can help (especially NPD) when individual therapy stabilizes
No medication is FDA-approved for either disorder; SSRIs may help comorbid depression and anxiety
Mood stabilizers / atypical antipsychotics off-label for affective dysregulation in some cases
Complications
Major depressive episodes, especially in NPD after narcissistic injury — high suicide risk in some studies
Substance use disorders
Interpersonal and occupational dysfunction
Relationship instability
Comorbidity with other cluster B disorders (overlap especially with borderline)
PANCE pearls
NPD has two phenotypes — overt/grandiose and covert/vulnerable. Both share the core fragile self-esteem.
Empathic, mentalization-based approaches outperform confrontation in NPD.
HPD and somatization can co-occur; theatrical symptom reports may mislead workup.
Antidepressants treat depression in NPD, not the underlying disorder.
Narcissistic injury (perceived slight) can precipitate severe depression and suicidality — assess at every visit during crises.
In NPD therapy, avoid feeding grandiosity with excessive admiration and avoid early direct confrontation (it can provoke dropout after narcissistic injury); in HPD, keep clear professional boundaries.
References
DSM-5-TR — American Psychiatric Association. DSM-5-TR. 2022.
Caligor 2015 — Caligor E, Levy KN, Yeomans FE. Narcissistic personality disorder: diagnostic and clinical challenges. Am J Psychiatry 2015;172:415-22.
Bateman 2015 — Bateman A, Fonagy P. Borderline personality disorder and mood disorders: mentalizing as a framework for integrated treatment. J Clin Psychol 2015;71(8):792-804.
Practice Psychiatry/Behavioral questions on FirstPassPA
Turn this outline into retention. 7,700+ board-style questions with an AI tutor that explains every answer — free to start, no card required.
Educational use only. This outline is a study aid for PA students and is not medical advice or a substitute for clinical judgment. FirstPassPA is an independent study tool and is not affiliated with, endorsed by, or sponsored by NCCPA or PAEA. PANCE® and PANRE® are registered trademarks of the National Commission on Certification of Physician Assistants; End of Rotation™ is a program of the Physician Assistant Education Association.