Cluster B personality disorders


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Cluster B personality disorders

Psychological disorders

Mood disorders

Major depressive disorder


Bipolar disorder

Seasonal affective disorder

Premenstrual dysphoric disorder

Anxiety disorders

Generalized anxiety disorder

Social anxiety disorder

Panic disorder



Obsessive-compulsive disorders

Obsessive-compulsive disorder

Body focused repetitive disorders

Body dysmorphic disorder

Stress-related disorders and abuse

Post-traumatic stress disorder

Physical and sexual abuse

Psychotic disorders

Schizoaffective disorder

Schizophreniform disorder

Delusional disorder


Cognitive and dissociative disorders



Dissociative disorders

Eating disorders

Anorexia nervosa

Bulimia nervosa

Personality disorders

Cluster A personality disorders

Cluster B personality disorders

Cluster C personality disorders

Somatoform and factitious disorders

Somatic symptom disorder

Factitious disorder

Substance use disorders and drugs of abuse

Tobacco dependence

Opioid dependence

Cannabis dependence

Cocaine dependence

Alcohol use disorder

Sleep disorders


Nocturnal enuresis


Night terrors

Narcolepsy (NORD)

Sexual dysfunction disorders

Erectile dysfunction

Male hypoactive sexual desire disorder

Orgasmic dysfunction

Female sexual interest and arousal disorder

Genito-pelvic pain and penetration disorder

Pediatric disorders

Attention deficit hyperactivity disorder

Disruptive, impulse control, and conduct disorders

Learning disability

Fetal alcohol syndrome

Tourette syndrome

Autism spectrum disorder

Rett syndrome

Shaken baby syndrome



Psychiatric emergencies


Serotonin syndrome

Neuroleptic malignant syndrome

Psychological disorders review

Mood disorders: Pathology review

Amnesia, dissociative disorders and delirium: Pathology review

Personality disorders: Pathology review

Eating disorders: Pathology review

Psychological sleep disorders: Pathology review

Psychiatric emergencies: Pathology review

Drug misuse, intoxication and withdrawal: Hallucinogens: Pathology review

Malingering, factitious disorders and somatoform disorders: Pathology review

Anxiety disorders, phobias and stress-related disorders: Pathology Review

Trauma- and stress-related disorders: Pathology review

Schizophrenia spectrum disorders: Pathology review

Drug misuse, intoxication and withdrawal: Stimulants: Pathology review

Drug misuse, intoxication and withdrawal: Alcohol: Pathology review

Developmental and learning disorders: Pathology review

Childhood and early-onset psychological disorders: Pathology review


Cluster B personality disorders


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USMLE® Step 1 questions

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High Yield Notes

5 pages


Cluster B personality disorders

of complete


USMLE® Step 1 style questions USMLE

of complete

A 45-year-old man comes to the office for a routine physical examination. After waiting an hour, he begins to berate the receptionist and demands to be seen by a doctor. He says that other patients in the waiting room had tried to engage him in a conversation about their own problems. He says, “My health is far more important than their health! After all, I am the owner of a multinational bank!” During the visit, the patient expresses irritation in having to take the time out of his busy schedule and is under a lot of stress lately. The patient talks about feeling depressed because of multiple failed relationships, even though he is a “great romantic.” He recently broke up with his partner because they canceled a plan with him in order to visit their parents after their grandmother’s death. Past medical and family history is noncontributory. Temperature is 37°C (98.6°F), pulse is 81/min, respirations are 14/min, and blood pressure is 129/80 mm Hg. Physical examination shows no abnormalities. Which of the following is the best explanation for this patient’s behavior?  

External References

First Aid








Antisocial personality disorder p. 588

early-onset disorder p. 580


Content Reviewers

Rishi Desai, MD, MPH


Tanner Marshall, MS

If you were asked to describe a friend’s personality, you might describe them as generally being a creative type, or easy-going but nervous in groups.

Basically, you’re trying to summarize the personal traits that make them who they are—either how they think or how they act.

Sometimes these thought patterns or behaviors which make up a person’s personality can actually be harmful in the sense that they interfere with their day-to-day functioning in their personal life, at work, or in social settings.

If this were the case, we would say that the individual has a personality disorder.

The DSM-5, or the diagnostic and statistical manual for mental disorders, the 5th edition, lists ten personality disorders that are split into three different ‘clusters’, referred to as clusters A, B, and C.

These used to be under the category “Axis 2” but that way of organizing isn’t really used anymore.

Cluster B includes antisocial personality disorder, borderline personality disorder, histrionic personality disorder, and narcissistic personality disorder.

All four of these have a genetic relationship with mood disorders- like depression and bipolar disorder, as well as substance use disorders.

Okay, so antisocial personality disorder—this sounds like they don’t get along well with others, but in fact, it’s the opposite, they can be really charming and often use that to manipulate others for their personal gain.

These individuals disregard moral values and societal norms, have little empathy, and poor impulse control.

This combination makes them willing to hurt others if it helps them, making them prone to aggressive and unlawful behavior, at times earning the label sociopath or psychopath.

In fact, individuals with this disorder tend to be overrepresented in prison populations and have higher rates of substance use.

These individuals typically fail to show remorse or guilt and rarely accept responsibility for any of the harm that they cause others.

This disorder is also unique in that individuals must be over 18 years old and have a history of conduct disorder in order to meet the diagnosis.


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