Schizophrenia US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Schizophrenia. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Schizophrenia US Medical PG Question 1: 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 The father says that his daughter has become increasingly withdrawn; she has not answered any phone calls or visited her family and friends.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
Schizophrenia 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**.
Schizophrenia US Medical PG Question 2: Two dizygotic twins present to the university clinic because they believe they are being poisoned through the school's cafeteria food. They have brought these concerns up in the past, but no other students or cafeteria staff support this belief. Both of them are average students with strong and weak subject areas as demonstrated by their course grade-books. They have no known medical conditions and are not known to abuse illicit substances. Which statement best describes the condition these patients have?
- A. A trial separation is likely to worsen symptoms.
- B. The disorder is its own disease entity in DSM-5.
- C. Antipsychotic medications are rarely beneficial.
- D. Can affect two or more closely related individuals. (Correct Answer)
- E. Cognitive behavioral therapy is a good first-line.
Schizophrenia Explanation: ***Can affect two or more closely related individuals.***
- The shared delusional belief in **folie à deux**, also known as **shared psychotic disorder**, typically occurs in two or more people who are closely associated.
- In this case, the **dizygotic twins** sharing the same delusional belief about being poisoned from cafeteria food fits this pattern.
*A trial separation is likely to worsen symptoms.*
- **Separating the individuals** involved in **folie à deux** is often a crucial step in treatment, as it can help break the cycle of shared delusion and allow for individual therapy.
- Separation typically IMPROVES rather than worsens symptoms by removing the reinforcement of the shared delusion.
*The disorder is its own disease entity in DSM-5.*
- In the **DSM-5**, **folie à deux** is no longer considered a separate diagnostic category.
- Instead, it is classified under **Other Specified Schizophrenia Spectrum and Other Psychotic Disorder** or **Unspecified Schizophrenia Spectrum and Other Psychotic Disorder**, with the specific context of shared delusion noted.
*Antipsychotic medications are rarely beneficial.*
- **Antipsychotics** are actually commonly used in treating folie à deux, particularly for the **primary individual** who initially developed the delusion.
- They can be an important component of treatment, often combined with separation and psychotherapy.
*Cognitive behavioral therapy is a good first-line.*
- **Cognitive Behavioral Therapy (CBT)** can be beneficial, particularly after separation, to help individuals challenge and reframe their delusional beliefs.
- However, the **first-line intervention** for shared psychotic disorder is **separation of the involved individuals**, followed by individual therapy (which may include CBT) and medication as needed.
Schizophrenia US Medical PG Question 3: A 43-year-old woman presents for a routine checkup. She says she has been uncontrollably grimacing and smacking her lips for the past 2 months, and these symptoms have been getting progressively worse. Past medical history is significant for schizophrenia, managed medically with haloperidol. Which of the following is the most likely diagnosis in this patient?
- A. Oculogyric crisis
- B. Trismus
- C. Tourette’s syndrome
- D. Torticollis
- E. Tardive dyskinesia (Correct Answer)
Schizophrenia Explanation: ***Tardive dyskinesia***
- The symptoms of **uncontrollable grimacing** and **lip smacking** are classic presentations of **tardive dyskinesia**, an involuntary movement disorder.
- This condition often develops after **chronic use of dopamine receptor-blocking agents**, such as typical antipsychotics like **haloperidol**.
- Tardive dyskinesia typically emerges after months to years of antipsychotic therapy and is more commonly associated with first-generation (typical) antipsychotics.
*Oculogyric crisis*
- This is a form of **acute dystonia** characterized by **sustained upward deviation of the eyes**.
- While it can be induced by antipsychotics, the present symptoms of grimacing and lip smacking are not characteristic of an oculogyric crisis.
*Trismus*
- Trismus refers to a **limited range of motion of the jaw** or a **sustained contraction of the jaw muscles**.
- This condition primarily affects the jaw and would not explain the grimacing or lip-smacking movements.
*Tourette's syndrome*
- Tourette's syndrome is characterized by **multiple motor tics** and at least one **vocal tic** that persist for more than a year.
- While some tics can involve facial movements, the sudden onset in adulthood after medication use points away from Tourette's, which typically presents in childhood.
*Torticollis*
- Torticollis, or **wry neck**, is a focal dystonia characterized by a sustained or intermittent **contraction of neck muscles**, leading to abnormal head posture.
- This condition primarily affects the neck and head posture and does not explain the oral-facial dyskinesias described.
Schizophrenia US Medical PG Question 4: A 20-year-old male is involuntarily admitted to the county psychiatric unit for psychotic behavior over the past three months. The patient's mother explained to the psychiatrist that her son had withdrawn from family and friends, appeared to have no emotions, and had delusions that he was working for the CIA. When he spoke, his sentences did not always seem to have any connection with each other. The mother finally decided to admit her son after he began stating that he "revealed too much information to her and was going to be eliminated by the CIA." Which of the following diagnoses best fits this patient's presentation?
- A. Schizophrenia
- B. Brief psychotic disorder
- C. Schizophreniform disorder (Correct Answer)
- D. Schizoid personality disorder
- E. Schizotypal personality disorder
Schizophrenia Explanation: ***Schizophreniform disorder***
- The patient exhibits classic symptoms of **psychosis**, including delusions, disorganized speech, flat affect, and social withdrawal, which are characteristic of schizophrenia spectrum disorders.
- The duration of symptoms (3 months) fits the criteria for **schizophreniform disorder**, which is when psychotic symptoms last between 1 month and 6 months.
*Schizophrenia*
- Schizophrenia requires symptoms to be present for at least **6 months**, including at least 1 month of active-phase symptoms.
- While this patient's symptoms are consistent with psychotic disorder, the **duration criteria** for schizophrenia have not yet been met.
*Brief psychotic disorder*
- Brief psychotic disorder is characterized by symptoms lasting from **1 day to 1 month**, with eventual full return to premorbid functioning.
- The patient's symptoms have persisted for **3 months**, exceeding the maximum duration for brief psychotic disorder.
*Schizoid personality disorder*
- This disorder is characterized by a pervasive pattern of **detachment from social relationships** and a restricted range of emotional expression.
- While the patient exhibits social withdrawal, the presence of **delusions, disorganized speech, and flat affect** indicates a psychotic disorder, not merely a personality disorder.
*Schizotypal personality disorder*
- Schizotypal personality disorder involves pervasive social and interpersonal deficits with **cognitive or perceptual distortions** and eccentric behaviors.
- While it can involve odd beliefs, it does not typically include the prominent, fixed, and systematized **delusions and disorganized speech** seen in this patient's presentation.
Schizophrenia US Medical PG Question 5: A 34-year-old male presents to clinic today complaining that his medication has stopped working. He states despite being able to manage the side effects, a voice has returned again telling him to hurt his Mother. You prescribe him a drug which has shown improved efficacy in treating his disorder but requires frequent followup visits. One week later he returns with the following lab results: WBC : 2500 cells/mcL, Neutrophils : 55% and, Bands : 1%. What drug was this patient prescribed?
- A. Clozapine (Correct Answer)
- B. Lurasidone
- C. Olanzapine
- D. Chlorpromazine
- E. Haloperidol
Schizophrenia Explanation: ***Clozapine***
- **Clozapine** is an atypical antipsychotic known for its superior efficacy in **treatment-resistant schizophrenia**, which fits the patient's presentation of a recurrence of symptoms despite prior medication.
- The given lab results (WBC 2500 cells/mcL, Neutrophils 55%, Bands 1%) show signs of **neutropenia**, a severe side effect of clozapine that necessitates frequent monitoring of complete blood counts (CBCs).
*Lurasidone*
- **Lurasidone** is an atypical antipsychotic, but it is not typically considered a first-line treatment for treatment-resistant cases and does not carry the same risk of agranulocytosis requiring frequent CBC monitoring as clozapine.
- It would not explain the **observed neutropenia** and the need for frequent follow-up for blood work.
*Olanzapine*
- While **olanzapine** is an effective atypical antipsychotic, it is not uniquely indicated for treatment-resistant cases in the same way clozapine is, nor does it typically require the intensive hematological monitoring.
- Its main severe side effects are metabolic (e.g., weight gain, dyslipidemia), not **neutropenia** that would manifest in these lab results.
*Chlorpromazine*
- **Chlorpromazine** is a first-generation antipsychotic and, while effective, is not known for superior efficacy in treatment-resistant cases compared to clozapine and has a different side effect profile.
- It can cause **agranulocytosis** but is not the drug of choice for treatment-resistant schizophrenia and its side effect profile does not align.
*Haloperidol*
- **Haloperidol** is a potent first-generation antipsychotic, effective for acute psychosis, but less effective for negative symptoms and carries a high risk of extrapyramidal side effects.
- It is not typically chosen for treatment-resistant cases and does not cause the specific hematological issues seen in the lab results that would necessitate weekly follow-up for blood counts.
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