Personality disorders US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Personality disorders. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Personality disorders US Medical PG Question 1: A 55-year-old male was picked up by police in the public library for harassing the patrons and for public nudity. He displayed disorganized speech and believed that the books were the only way to his salvation. Identification was found on the man and his sister was called to provide more information. She described that he recently lost his house and got divorced within the same week although he seemed fine three days ago. The man was sedated with diazepam and chlorpromazine because he was very agitated. His labs returned normal and within three days, he appeared normal, had no recollection of the past several days, and discussed in detail how stressful the past two weeks of his life were. He was discharged the next day. Which of the following is the most appropriate diagnosis for this male?
- A. Brief psychotic disorder (Correct Answer)
- B. Schizotypal personality disorder
- C. Schizophreniform disorder
- D. Schizophrenia
- E. Schizoid personality disorder
Personality disorders Explanation: ***Brief psychotic disorder***
- This patient exhibited characteristic symptoms such as **sudden onset of psychotic symptoms** (disorganized speech, delusions, public nudity) that lasted **less than one month** and were preceded by a **severe psychosocial stressor** (loss of house, divorce).
- The **full return to premorbid functioning** and lack of recollection after the episode further support brief psychotic disorder, distinguishing it from other chronic psychotic disorders.
*Schizotypal personality disorder*
- Characterized by a pervasive pattern of **social and interpersonal deficits**, cognitive or perceptual distortions, and eccentricities of behavior, which are usually **long-standing** and not episodic.
- While there may be odd beliefs or magical thinking, the dramatic and time-limited psychotic episode in the scenario is not typical of schizotypal personality disorder.
*Schizophreniform disorder*
- This disorder is diagnosed when psychotic symptoms (like those seen in schizophrenia) are present for **at least one month but less than six months**.
- Although the patient presented with psychotic symptoms, their rapid resolution within three days makes a diagnosis of schizophreniform disorder unlikely.
*Schizophrenia*
- Requires continuous signs of disturbance for **at least six months**, including at least one month of active-phase symptoms, along with significant impairment in social or occupational functioning.
- The rapid resolution of symptoms and return to baseline within days in this case immediately rules out schizophrenia, which is a chronic condition.
*Schizoid personality disorder*
- Characterized by a pervasive pattern of **detachment from social relationships** and a restricted range of expression of emotions in interpersonal settings.
- This disorder does not involve psychotic symptoms, disorganized speech, or delusions of the intensity described in the patient's presentation.
Personality disorders US Medical PG Question 2: A 19-year-old woman comes to the physician because of a 2-day history of difficulty sleeping. She worries that the lack of sleep will ruin her career prospects as a model. She has been coming to the physician multiple times over the past year for minor problems. She is dressed very extravagantly and flirts with the receptionist. When she is asked to sit down in the waiting room, she begins to cry and says that no one listens to her. When she is called to the examination room, she moves close to the physician, repeatedly intends to touch his cheek, and makes inappropriate comments. She does not have a history of self-harm or suicidal ideation. Which of the following is the most likely diagnosis?
- A. Schizotypal personality disorder
- B. Borderline personality disorder
- C. Dependent personality disorder
- D. Narcissistic personality disorder
- E. Histrionic personality disorder (Correct Answer)
Personality disorders Explanation: ***Histrionic personality disorder***
- This patient displays classic features of **histrionic personality disorder**, including **attention-seeking behaviors** (flirting, extravagant dress, dramatic crying), **inappropriate sexually seductive behavior** toward the physician, and **rapidly shifting and shallow emotions** (cries that no one listens to her, then attempts to touch the physician).
- Her excessive emotionality and constant need to be the center of attention, coupled with a tendency to use physical appearance to draw attention to herself, align well with the diagnostic criteria.
*Schizotypal personality disorder*
- Characterized by a pervasive pattern of **social and interpersonal deficits** marked by acute discomfort with, and reduced capacity for, close relationships, as well as by **cognitive or perceptual distortions** and eccentricities of behavior.
- This patient does not exhibit evidence of odd beliefs, magical thinking, unusual perceptual experiences, or paranoid ideation typical of schizotypal personality disorder.
*Borderline personality disorder*
- Marked by a pervasive pattern of **instability of interpersonal relationships, self-image, and affects**, and marked impulsivity. Patients often exhibit intense fears of abandonment, chronic feelings of emptiness, and self-harming behaviors.
- While there is some emotional dysregulation and intense relationships, the patient does not report **self-harm, suicidal ideation**, or the severe identity disturbance common in borderline personality disorder.
*Dependent personality disorder*
- Individuals with dependent personality disorder exhibit an excessive need to be cared for, leading to **submissive and clinging behavior** and fears of separation. They often have difficulty making everyday decisions without excessive reassurance.
- This patient's behaviors are geared towards attracting attention and being the center of it, rather than seeking reassurance or exhibiting submissive behavior.
*Narcissistic personality disorder*
- Characterized by a pervasive pattern of **grandiosity, a need for admiration**, and a lack of empathy. Patients often believe they are special and unique and expect to be recognized as superior.
- While this patient seeks attention, her behavior is more about being dramatic and emotionally expressive rather than a sense of inflated self-importance or a deep need for admiration stemming from grandiosity.
Personality disorders US Medical PG Question 3: A 29-year-old woman is brought to the physician by her father because of a change in her behavior over the past 8 months. The father says that his daughter has become increasingly withdrawn; she has not answered any phone calls or visited her family and friends. The patient says that she has to stay at home because a foreign intelligence service is monitoring her. She thinks that they are using a magnetic field to read her mind. Mental status exam shows disjointed and perseverative thinking. She is anxious and has a flat affect. Which of the following is the most likely diagnosis?
- A. Delusional disorder
- B. Schizophrenia (Correct Answer)
- C. Paranoid personality disorder
- D. Schizophreniform disorder
- E. Schizoid personality disorder
Personality disorders Explanation: ***Schizophrenia***
- The patient's presentation with **delusions of persecution and thought broadcasting**, accompanied by **disjointed, perseverative thinking**, and **flat affect** for 8 months, is highly indicative of schizophrenia.
- Schizophrenia is characterized by a combination of positive symptoms (delusions, hallucinations, disorganized speech), negative symptoms (flat affect, social withdrawal), and cognitive symptoms (disorganized thinking) lasting for at least 6 months.
*Delusional disorder*
- Delusional disorder is characterized by the presence of **non-bizarre delusions for at least 1 month** without other significant psychotic symptoms or marked impairment in functioning.
- The patient's symptoms include **disorganized thinking and flat affect**, which are not typical of delusional disorder and suggest a broader psychotic illness.
*Paranoid personality disorder*
- Characterized by a pervasive distrust and suspicion of others, where their motives are interpreted as malevolent, but **without the presence of frank delusions or other psychotic symptoms**.
- The patient is experiencing **fixed, false beliefs (delusions)** involving mind reading and foreign intelligence, which goes beyond the pervasive distrust seen in paranoid personality disorder.
*Schizophreniform disorder*
- Schizophreniform disorder presents with symptoms identical to schizophrenia, but the **duration is between 1 and 6 months**.
- Since the patient's symptoms have been present for **8 months**, it exceeds the diagnostic criteria for schizophreniform disorder, making schizophrenia a more likely diagnosis.
*Schizoid personality disorder*
- Characterized by a pervasive pattern of **detachment from social relationships** and a restricted range of expression of emotions in interpersonal settings.
- While the patient exhibits social withdrawal, this condition does **not involve delusions, disorganized thinking, or other psychotic features**.
Personality disorders US Medical PG Question 4: A 23-year-old man is brought to the emergency department by his girlfriend because of acute agitation and bizarre behavior. The girlfriend reports that, over the past 3 months, the patient has become withdrawn and stopped pursuing hobbies that he used to enjoy. One month ago, he lost his job because he stopped going to work. During this time, he has barely left his apartment because he believes that the FBI is spying on him and controlling his mind. He used to smoke marijuana occasionally in high school but quit 5 years ago. Physical and neurologic examinations show no abnormalities. On mental status examination, he is confused and suspicious with marked psychomotor agitation. His speech is disorganized and his affect is labile. Which of the following is the most likely diagnosis?
- A. Schizophreniform disorder (Correct Answer)
- B. Schizoid personality disorder
- C. Delusional disorder
- D. Schizoaffective disorder
- E. Brief psychotic disorder
Personality disorders Explanation: **Correct: Schizophreniform disorder**
- This patient presents with ***psychotic symptoms*** (delusions, disorganized speech, agitation) and ***negative symptoms*** (withdrawal, anhedonia, loss of job), which have been present for approximately ***3 months***.
- The ***duration of symptoms (1-6 months)*** is the key differentiating factor for schizophreniform disorder compared to brief psychotic disorder (<1 month) or schizophrenia (>6 months).
- Meets DSM-5 criteria: psychotic symptoms with functional impairment lasting between 1 and 6 months.
*Incorrect: Schizoid personality disorder*
- Characterized by a pervasive pattern of ***detachment from social relationships*** and a restricted range of emotional expression, which are ***ego-syntonic*** and typically stable over time.
- This is a personality disorder with chronic traits, not an acute psychotic disorder.
- Does not include acute psychotic symptoms like delusions or disorganized speech.
*Incorrect: Delusional disorder*
- Defined by the presence of ***non-bizarre delusions*** for at least one month, without other significant psychotic symptoms or major functional impairment.
- This patient has ***bizarre delusions*** (FBI controlling his mind), ***disorganized speech***, ***psychomotor agitation***, and ***marked functional impairment***, which exceed the criteria for delusional disorder.
*Incorrect: Schizoaffective disorder*
- Requires the presence of a ***major mood episode*** (depressive or manic) concurrent with symptoms of schizophrenia, AND ***delusions or hallucinations for at least 2 weeks*** in the absence of a major mood episode.
- While the patient exhibits labile affect, there is no evidence of a distinct, prolonged major mood episode (major depression or mania) as required for schizoaffective disorder.
*Incorrect: Brief psychotic disorder*
- Characterized by the sudden onset of psychotic symptoms (delusions, hallucinations, disorganized speech or behavior) that last for ***at least one day but less than one month***, followed by full return to premorbid functioning.
- The patient's symptoms have been ongoing for approximately ***3 months***, which exceeds the duration criteria for brief psychotic disorder.
Personality disorders US Medical PG Question 5: A 29-year-old man comes to the physician with his wife because she has noticed a change in his behavior over the past 2 weeks. His wife reports that he is very distracted and irritable. His colleagues have voiced concerns that he has not been turning up for work regularly and behaves erratically when he does. Previously, her husband had been a reliable and reasonable person. The patient says that he feels “fantastic”; he only needs 4 hours of sleep each night and wakes up cheerful and full of energy each morning. He thinks that his wife is overreacting. The patient has been healthy except for a major depressive episode 5 years ago that was treated with paroxetine. He currently takes no medications. His pulse is 98/min, respirations are 12/min, and blood pressure is 128/62 mm Hg. Mental status examination shows frenzied speech and a flight of ideas. Which of the following is the strongest predisposing factor for this patient's condition?
- A. Advanced paternal age
- B. Genetic predisposition (Correct Answer)
- C. Higher socioeconomic class
- D. Maternal obstetric complications
- E. Being married
Personality disorders Explanation: ***Genetic predisposition***
- A strong **genetic predisposition** is a primary predisposing factor for bipolar disorder, as evidenced by a significantly higher concordance rate in monozygotic twins compared to dizygotic twins or the general population.
- The patient's presentation with **manic symptoms** (decreased need for sleep, euphoria, irritability, frenzied speech, flight of ideas, erratic behavior) following a history of a **major depressive episode** is highly suggestive of **bipolar I disorder**.
*Advanced paternal age*
- While advanced paternal age has been associated with an increased risk of some neurodevelopmental disorders like **schizophrenia** and **autism spectrum disorder**, its link to bipolar disorder is less robust and not considered the strongest predisposing factor.
- The primary risk factor for bipolar disorder involves heritability rather than specific parental age.
*Higher socioeconomic class*
- There is **no consistent evidence** to suggest that higher socioeconomic class is a predisposing factor for bipolar disorder.
- Bipolar disorder affects individuals across all socioeconomic levels.
*Maternal obstetric complications*
- Maternal obstetric complications, such as **prenatal infections** or **hypoxia**, have been implicated in the development of certain psychiatric disorders, particularly **schizophrenia**.
- However, for bipolar disorder, genetic factors play a far more significant and direct role than obstetric complications.
*Being married*
- **Marital status** does not serve as a predisposing factor for the development of bipolar disorder.
- While relationship challenges can be a consequence or stressor for individuals with bipolar disorder, marriage itself is not a cause.
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