Cluster B Personality Disorders

Cluster B Personality Disorders

Cluster B Personality Disorders

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Cluster B Overview - The Dramatic Quartet

  • Core Features: Dramatic, emotional, erratic, and impulsive behaviors. Often attention-seeking.
  • Key Challenges: Poor impulse control, unstable emotional regulation, and tumultuous interpersonal relationships.
  • The Quartet:
    • Antisocial (ASPD)
    • Borderline (BPD)
    • Histrionic (HPD)
    • Narcissistic (NPD)
  • 📌 Mnemonic: Think "Wild" behavior (common thread). Cluster B Personality Disorders List

⭐ Cluster B disorders are characterized by dramatic, overly emotional, or unpredictable thinking or behavior and an increased risk of suicide and suicidal behavior.

Antisocial PD - Rule Breakers Inc.

  • Pervasive disregard for and violation of others' rights, occurring since age 15.
  • Diagnosis requires individual to be at least age 18.
  • Evidence of Conduct Disorder with onset before age 15 is essential.
  • Requires ≥3 of:
    • Law-breaking
    • Deceitfulness (lying, conning)
    • Impulsivity / poor planning
    • Irritability & aggressiveness
    • Reckless disregard for safety
    • Irresponsibility (work, financial)
    • Lack of remorse
  • 📌 Mnemonic: CALLOUS MAN (helps recall criteria)

⭐ A history of Conduct Disorder with onset before age 15 years is a prerequisite for an Antisocial Personality Disorder diagnosis.

Borderline PD - Emotional Rollercoaster

  • Instability: relationships, self-image, emotions; marked impulsivity. Begins early adulthood.
  • 📌 Mnemonic: "AM SUICIDE" (≥5 criteria for diagnosis)
    • Abandonment fears
    • Mood instability (intense reactivity)
    • Suicidal/self-harm behavior
    • Unstable intense relationships (idealization/devaluation - "splitting")
    • Impulsivity (≥2 areas: e.g., spending, sex, substances)
    • Control of anger (difficulty)
    • Identity disturbance
    • Dissociative/paranoid (transient, stress-related)
    • Emptiness (chronic)
  • High suicide risk; history of childhood trauma common. Emotional dysregulation in Borderline Personality Disorder

⭐ Dialectical Behavior Therapy (DBT) is the most effective evidence-based treatment for Borderline Personality Disorder, particularly for reducing self-harm and suicidal behaviors.

Histrionic PD - Center Stage Cravers

  • Core: Excessive emotionality & attention-seeking. Onset by early adulthood.
  • Key traits:
    • Needs to be center of attention.
    • Seductive/provocative behavior.
    • Rapidly shifting, shallow emotions.
    • Uses appearance for attention.
    • Impressionistic speech, lacks detail.
    • Theatrical, exaggerated emotions.
    • Suggestible.
    • Considers relationships more intimate.
  • 📌 Mnemonic: PRAISE ME (Provocative, Relationships, Attention, Influenced, Speech, Emotions, Make-up, Exaggerated).

⭐ Individuals with Histrionic Personality Disorder often display rapidly shifting and shallow expression of emotions, and their behavior is typically aimed at drawing attention to themselves.

Narcissistic PD - Grandiose & Entitled

  • Pervasive grandiosity, need for admiration, profound lack of empathy.
  • Onset by early adulthood; varied contexts.
  • Prevalence: 0-6.2% in community samples; more frequent in males.
  • Believes self to be special, unique; expects preferential treatment.
  • Interpersonally exploitative; envious or believes others envy them.
  • Arrogant, haughty behaviors/attitudes. Fragile self-esteem, prone to narcissistic injury.
  • 📌 Mnemonic: "SPEEECIAL" (Self-importance, Preoccupied fantasies, Envy, Entitlement, Excessive admiration, Conceited, Interpersonally exploitative, Arrogant, Lacks empathy).

⭐ A core feature of Narcissistic Personality Disorder is a pervasive pattern of grandiosity (in fantasy or behavior), need for admiration, and a profound lack of empathy.

High‑Yield Points - ⚡ Biggest Takeaways

  • Cluster B disorders are characterized by dramatic, emotional, or erratic behaviors.
  • Antisocial PD: Disregard for others' rights, deceitfulness, lack of remorse; often a history of Conduct Disorder before age 15.
  • Borderline PD: Marked by instability in relationships, self-image, and affect, impulsivity, splitting, and recurrent self-harm or suicidal gestures; DBT is a key treatment.
  • Histrionic PD: Features excessive emotionality, attention-seeking behavior, and considers relationships more intimate than they are.
  • Narcissistic PD: Defined by grandiosity, a profound need for admiration, and a lack of empathy.
  • Impulsivity and interpersonal difficulties are common across these disorders, often challenging therapeutic alliance.
  • Be vigilant for manipulative behaviors and potential for acting out defense mechanisms during assessment and management of Cluster B PDs.

Practice Questions: Cluster B Personality Disorders

Test your understanding with these related questions

A 13-year-old boy is brought by his parents with history of frequent fighting at school, disciplinary problems, stealing money, assaulting his batchmates and being weak in studies. What is the most appropriate diagnosis for this child:

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Flashcards: Cluster B Personality Disorders

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Micropsychotic episodes (short-lived psychotic episodes)  are commonly seen in _____ personality disorder.

TAP TO REVEAL ANSWER

Micropsychotic episodes (short-lived psychotic episodes)  are commonly seen in _____ personality disorder.

borderline

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