Psychotic Disorders — MCQs

Psychotic Disorders Indian Medical PG Practice Questions and MCQs

Question 191: What is the meaning of the term schizophrenia?

A. Free mind
B. Euphoric mind
C. Split mind (Correct Answer)
D. Confused mind

Explanation: **Explanation:** The term **Schizophrenia** was coined by the Swiss psychiatrist **Eugen Bleuler** in 1908. It is derived from the Greek words *'schizein'* (to split) and *'phren'* (mind). 1. **Why "Split mind" is correct:** Bleuler used this term to describe a "splitting" or fragmentation of various mental functions—specifically the separation between emotion, thought, and behavior (e.g., a patient laughing while describing a tragic event). It does **not** refer to multiple personality disorder (Dissociative Identity Disorder), which is a common misconception. 2. **Why other options are incorrect:** * **Free mind:** This has no clinical relevance to the pathology of psychosis. * **Euphoric mind:** Euphoria is a characteristic of Mania (Bipolar Disorder), not the core feature of Schizophrenia. * **Confused mind:** While patients may appear disorganized, "confusion" typically refers to a clouding of consciousness, which is the hallmark of **Delirium** (Organic Brain Syndrome). In Schizophrenia, consciousness usually remains clear. **High-Yield Clinical Pearls for NEET-PG:** * **Eugen Bleuler** also described the **4 A's** of Schizophrenia: **A**ffective blunting, **A**mbivalence, **A**utism (social withdrawal), and **A**ssociative looseness. * **Emil Kraepelin** previously called this condition **Dementia Praecox** (premature dementia), focusing on its early onset and deteriorating course. * **Schneider’s First Rank Symptoms (FRS)** are the most commonly tested diagnostic criteria for Schizophrenia in exams. * The primary neurotransmitter abnormality involved is **excess Dopamine** in the mesolimbic pathway.

Question 192: Which of the following diseases is associated with hyperactivity of the mesocortical dopaminergic system?

A. Huntington's chorea
B. Schizophrenia (Correct Answer)
C. Parkinson's disease
D. Depression

Explanation: ### Explanation The correct answer is **Schizophrenia**. This question is based on the **Dopamine Hypothesis of Schizophrenia**, which suggests that symptoms are caused by dysregulation of dopamine (DA) in specific brain pathways. **1. Why Schizophrenia is Correct:** Schizophrenia involves two distinct dopaminergic abnormalities: * **Mesolimbic Pathway:** Hyperactivity (increased DA) leads to **positive symptoms** (hallucinations, delusions). * **Mesocortical Pathway:** Hypoactivity (decreased DA) leads to **negative symptoms** (apathy, withdrawal) and cognitive deficits. * *Note:* While the question mentions "hyperactivity" of the mesocortical system, it is traditionally associated with **hypoactivity**. However, among the given options, Schizophrenia is the only disorder primarily defined by dopaminergic dysregulation in these specific cortical/limbic circuits. **2. Why Other Options are Incorrect:** * **Huntington’s Chorea:** Associated with hyperactivity of dopamine in the **Nigrostriatal pathway** (leading to chorea) and a deficiency of GABA and Acetylcholine in the basal ganglia. * **Parkinson’s Disease:** Caused by **hypoactivity** (destruction of dopaminergic neurons) in the **Nigrostriatal pathway** (Substantia Nigra pars compacta). * **Depression:** Primarily linked to deficiencies in **Serotonin (5-HT)** and **Norepinephrine**, rather than primary mesocortical dopamine hyperactivity. **3. NEET-PG High-Yield Pearls:** * **Nigrostriatal Pathway:** Controls motor function; blockade here by antipsychotics causes **Extrapyramidal Side Effects (EPS)**. * **Tuberoinfundibular Pathway:** Controls prolactin secretion; blockade here leads to **hyperprolactinemia** (galactorrhea, gynecomastia). * **Negative Symptoms Treatment:** Atypical antipsychotics (e.g., Clozapine) are preferred as they modulate serotonin-dopamine receptors to improve mesocortical function.

Question 193: Which of the following is a drug used in the treatment of schizophrenia?

A. Trifluperazine
B. Clozapine
C. Haloperidol
D. All of the above (Correct Answer)

Explanation: **Explanation:** Schizophrenia is primarily managed using **Antipsychotics**, which are classified into two main categories: Typical (First Generation) and Atypical (Second Generation). The fundamental mechanism involves the blockade of Dopamine (D2) receptors in the mesolimbic pathway to alleviate positive symptoms. * **Trifluperazine (Option A):** This is a high-potency **Typical Antipsychotic**. It is effective in treating schizophrenia but is associated with a higher incidence of Extrapyramidal Side Effects (EPS). * **Clozapine (Option B):** This is an **Atypical Antipsychotic**. It is unique because it is the "Gold Standard" for **Treatment-Resistant Schizophrenia** (defined as failure of two adequate trials of other antipsychotics). * **Haloperidol (Option C):** A prototype high-potency **Typical Antipsychotic**. It is frequently used in acute emergency settings for the management of agitation and acute psychosis. Since all three drugs belong to the pharmacological classes used to treat schizophrenia, **Option D** is the correct answer. **High-Yield Clinical Pearls for NEET-PG:** 1. **Clozapine:** Associated with **Agranulocytosis** (requires mandatory WBC monitoring) and has the lowest risk of EPS but the highest risk of seizures and weight gain. It is the only antipsychotic proven to reduce suicidal behavior in schizophrenia. 2. **Hyperprolactinemia:** Most common with Typical Antipsychotics and Risperidone (due to D2 blockade in the tuberoinfundibular pathway). 3. **Drug of Choice:** For most cases, Atypical antipsychotics (like Risperidone or Olanzapine) are preferred as first-line due to a better side-effect profile regarding EPS. 4. **Negative Symptoms:** Atypical antipsychotics are generally more effective than typical ones in treating the negative symptoms of schizophrenia.

Question 194: A man reports that the day after assaulting his neighbour, he feels that the police are pursuing him and that his brain is being controlled by radio waves originating from his neighbour. What is the probable diagnosis?

A. Personality disorder
B. Passivity feelings
C. Delusions of persecution (Correct Answer)
D. Organic brain syndrome

Explanation: **Explanation:** The patient is exhibiting two distinct types of delusions: **Delusions of persecution** (believing the police are pursuing him) and **Delusions of control/passivity** (believing his brain is controlled by radio waves). In the context of NEET-PG questions, when multiple psychotic symptoms are present, the primary diagnosis or the most prominent clinical feature is sought. 1. **Why Delusions of Persecution is correct:** The patient’s belief that the police are pursuing him after a conflict is a classic example of a persecutory delusion—a false, fixed belief that one is being harmed, harassed, or conspired against by others. While he also has passivity feelings, "Delusions of persecution" is the most encompassing clinical description for his paranoid state following the assault. 2. **Why other options are wrong:** * **Passivity feelings (Option B):** While the "radio waves" symptom is a passivity phenomenon (specifically a delusion of control), it is a *symptom*, not a diagnosis. The question asks for the "probable diagnosis." * **Personality disorder (Option A):** These are long-standing patterns of behavior. While a Paranoid Personality might predispose someone to conflict, the acute onset of "radio wave control" indicates a psychotic break rather than just a personality trait. * **Organic brain syndrome (Option D):** This refers to physical diseases affecting mental function (e.g., delirium, dementia). There is no evidence of fluctuating consciousness, disorientation, or medical illness in the history provided. **Clinical Pearls for NEET-PG:** * **Schneiderian First Rank Symptoms (FRS):** Delusions of control (passivity) and certain auditory hallucinations are pathognomonic for Schizophrenia. * **Delusion vs. Illusion:** A delusion is a disorder of **thought content**, whereas an illusion is a disorder of **perception**. * **Persecutory Delusions:** These are the most common type of delusions across various psychiatric disorders, including Schizophrenia and Delusional Disorder.

Question 195: Which of the following is a good prognostic factor in schizophrenia?

A. Early age of appearance
B. Male sex
C. Presence of negative symptoms
D. Presence of precipitating factors (Correct Answer)

Explanation: **Explanation:** The prognosis of schizophrenia is influenced by several clinical and demographic variables. The presence of **precipitating factors** (Option D) is a strong indicator of a **good prognosis**. This is because an illness triggered by a clear external stressor (e.g., bereavement, financial loss, or trauma) often suggests a reactive process rather than an ingrained constitutional vulnerability. Such cases typically have an acute onset and respond better to treatment compared to "insidious" cases where the illness develops without a clear cause. **Analysis of Incorrect Options:** * **Early age of appearance (Option A):** Early onset (childhood or adolescence) is a **poor prognostic factor**. It is often associated with structural brain abnormalities, poor premorbid adjustment, and a more chronic course. * **Male sex (Option B):** Males generally have a **poorer prognosis** than females. Men tend to have an earlier onset, more negative symptoms, and a less robust response to antipsychotics. * **Presence of negative symptoms (Option C):** Negative symptoms (e.g., apathy, anhedonia, poverty of speech) are associated with a **poor prognosis**. They are often resistant to typical antipsychotics and lead to significant social and occupational disability. **High-Yield Clinical Pearls for NEET-PG:** * **Good Prognostic Factors:** Late onset, female sex, married status, acute onset, presence of mood symptoms (especially depression), and good premorbid functioning. * **Poor Prognostic Factors:** Insidious onset, family history of schizophrenia, single/divorced status, and frequent relapses. * **Most common subtype** with a good prognosis is **Paranoid Schizophrenia**, while **Hebephrenic (Disorganized)** schizophrenia carries the worst prognosis.

Question 196: Which of the following is not among Bleuler's 4 A's of Schizophrenia?

A. Ambivalence
B. Apraxia (Correct Answer)
C. Affect disturbance
D. Autism

Explanation: **Explanation:** Eugen Bleuler, a Swiss psychiatrist, coined the term "Schizophrenia" and identified four primary (fundamental) symptoms that he believed were present in every case of the disorder. These are famously known as **Bleuler’s 4 A’s**. **Why Apraxia is the correct answer:** **Apraxia** is a neurological condition characterized by the inability to perform learned purposeful movements despite having the physical ability and desire to do so. It is not a diagnostic feature of schizophrenia. In the context of psychiatry, it is more commonly associated with neurodegenerative disorders like Alzheimer’s disease or parietal lobe lesions. **Analysis of the 4 A’s (Incorrect Options):** 1. **Affective Disturbance:** Refers to inappropriate or flattened affect (emotional expression). 2. **Autism:** Refers to a loss of contact with reality and a withdrawal into a private, inner world of fantasy. 3. **Ambivalence:** The coexistence of contradictory emotions, ideas, or desires toward the same object or situation at the same time. 4. **Associative Looseness:** (The 4th 'A' not listed in the options) Refers to a lack of logical connection between thoughts, leading to fragmented communication. **High-Yield Clinical Pearls for NEET-PG:** * **Bleuler’s Primary vs. Secondary Symptoms:** Bleuler categorized hallucinations and delusions as **secondary (accessory) symptoms**, whereas the 4 A’s were **primary (fundamental)**. * **Kurt Schneider’s First Rank Symptoms (FRS):** These are different from Bleuler’s criteria and focus on specific types of hallucinations (e.g., third-person auditory) and delusions (e.g., thought insertion/withdrawal). * **Diagnosis:** According to ICD-11 and DSM-5, the duration of symptoms is crucial (1 month for ICD-11; 6 months for DSM-5).

Question 197: Schizophrenia is associated with which type of personality?

A. Athletic
B. Psychasthenic
C. Asthenic (Correct Answer)
D. All of the above

Explanation: **Explanation:** The association between body habitus and psychiatric disorders was famously proposed by **Ernst Kretschmer**, a German psychiatrist. His constitutional theory suggests a correlation between physical build and temperament/mental illness. **Why Asthenic is Correct:** According to Kretschmer’s classification, the **Asthenic (or Leptosomatic)** body type—characterized by a thin, tall, and slender build with narrow shoulders and a flat chest—is most frequently associated with **Schizophrenia**. These individuals often possess a "schizoid" temperament (introverted, withdrawn, and sensitive) before the onset of the formal psychotic disorder. **Analysis of Incorrect Options:** * **Athletic:** This body type is characterized by strong muscular development and broad shoulders. Kretschmer associated this build with a stable temperament, though some later theories linked it to a lower risk of psychosis compared to the asthenic type. * **Psychasthenic:** This is a psychological term (originally coined by Pierre Janet) referring to a state of mental fatigue, anxiety, and phobias. It is a personality/neurotic trait, not a physical body type in Kretschmer’s classification. * **Pyknic (Not listed but relevant):** Characterized by a short, stocky, and "rotund" build. Kretschmer associated this type with **Bipolar Disorder** (Manic-Depressive Psychosis). **High-Yield Clinical Pearls for NEET-PG:** * **Kretschmer’s Triad:** Asthenic → Schizophrenia; Pyknic → Bipolar Disorder; Athletic → Balanced/Epilepsy (less consistent). * **Sheldon’s Somatotypes:** A similar theory by William Sheldon used different terms: **Ectomorph** (Asthenic), **Mesomorph** (Athletic), and **Endomorph** (Pyknic). * While these historical theories are rarely used in modern clinical diagnosis (DSM-5/ICD-11), they remain a classic favorite for "fact-based" psychiatry questions in competitive exams.

Question 198: Which of the following is not included in delusional misidentification syndromes?

A. Capgras syndrome
B. Fregoli syndrome
C. Syndrome of intermetamorphosis
D. Syndrome of objective doubles (Correct Answer)

Explanation: **Explanation:** **Delusional Misidentification Syndromes (DMS)** are a group of disorders where a patient misidentifies people, places, or objects, believing their identity has been altered or replaced. **Why Option D is Correct:** The term **"Syndrome of objective doubles"** is not a recognized clinical entity in psychiatry. The correct term is the **Syndrome of Subjective Doubles**, in which the patient believes that a doppelgänger (a double of themselves) is living a life of its own. Because "objective doubles" is a non-existent term, it is the correct answer to this "except" style question. **Analysis of Incorrect Options:** * **A. Capgras Syndrome:** The most common DMS. The patient believes a person close to them (e.g., a spouse) has been replaced by an identical-looking **imposter**. * **B. Fregoli Syndrome:** The patient believes that different people are actually a **single familiar person** in disguise (the opposite of Capgras). * **C. Syndrome of Intermetamorphosis:** The patient believes that people have swapped identities with each other both physically and psychologically. **NEET-PG High-Yield Pearls:** * **Anatomical Correlation:** DMS is often associated with lesions in the **Right Cerebral Hemisphere** (specifically the bifrontal or right temporoparietal regions). * **Associated Conditions:** While seen in Schizophrenia, these syndromes are highly associated with **Organic Brain Disorders** (e.g., Dementia, Right-sided stroke). * **Reduplicative Paramnesia:** Another DMS where a patient believes a physical location (like a hospital) has been duplicated or moved to another site.

Question 199: What is the prevalence of schizophrenia in dizygotic twins of a patient with schizophrenia?

A. 40%
B. 1%
C. 12% (Correct Answer)
D. 0.10%

Explanation: **Explanation:** The risk of developing schizophrenia is heavily influenced by genetic proximity. This question tests your knowledge of the **heritability patterns** of schizophrenia. **1. Why 12% is Correct:** The prevalence of schizophrenia in the general population is approximately **1%**. However, for a **dizygotic (fraternal) twin** of an affected individual, the risk increases significantly to approximately **12%**. This is because dizygotic twins share 50% of their genetic material, similar to non-twin siblings. The slight increase over regular siblings (who have an 8%–10% risk) is often attributed to shared prenatal environments. **2. Analysis of Incorrect Options:** * **Option A (40%):** This is incorrect for dizygotic twins but close to the risk for **monozygotic (identical) twins**, which is approximately **47%–50%**. Monozygotic twins share 100% of their DNA. * **Option B (1%):** This represents the **lifetime prevalence in the general population**, not the risk for a first-degree relative. * **Option D (0.10%):** This value is significantly lower than the baseline population risk and is clinically inaccurate. **High-Yield Clinical Pearls for NEET-PG:** * **Highest Risk:** If both parents have schizophrenia, the risk to the offspring is approximately **40%–46%**. * **Monozygotic Twins:** ~47% concordance rate (highest risk for a single relative). * **Dizygotic Twins/Siblings/Children of one parent:** ~10%–12% risk. * **Second-degree relatives (Uncles/Aunts):** ~2% risk. * **Adoption Studies:** These have been crucial in proving that the risk remains high even if the child is raised away from the biological parent, confirming a strong genetic component over purely environmental factors.

Question 200: Which of the following are considered Schneider's first-rank symptoms in schizophrenia?

A. Audible thoughts
B. Somatic passivity (Correct Answer)
C. Ambivalence
D. Depersonalization

Explanation: **Explanation:** Kurt Schneider identified a group of symptoms known as **First-Rank Symptoms (FRS)** which, while not pathognomonic, are highly suggestive of Schizophrenia in the absence of organic brain disease. **Somatic Passivity (Option B)** is a core FRS. It involves the patient’s belief that they are a passive recipient of bodily sensations imposed by an external agency (e.g., "I feel radio waves burning my skin"). The hallmark of FRS is the **loss of ego boundaries**, where the patient feels their thoughts, feelings, or actions are controlled by outside forces. **Analysis of Incorrect Options:** * **Audible Thoughts (Option A):** While "Thought Echo" (hearing one's thoughts spoken aloud) is an FRS, the term "Audible thoughts" is often used loosely. However, in the context of this specific question, Somatic Passivity is the classic textbook FRS. * **Ambivalence (Option C):** This is one of **Bleuler’s 4 A’s** (Fundamental symptoms), not a Schneiderian FRS. Bleuler’s 4 A’s include: Affective flattening, Ambivalence, Autism, and Associative looseness. * **Depersonalization (Option D):** This is a non-specific symptom seen in anxiety, depression, and dissociative disorders; it is not part of Schneider’s FRS. **High-Yield Clinical Pearls for NEET-PG:** Schneider’s First-Rank Symptoms can be remembered by the mnemonic **ABCD**: 1. **Auditory Hallucinations:** 3rd person (discussing the patient), Running commentary, or Thought echo (Gedankenlautwerden). 2. **Broadcasting of Thought:** (and Thought Withdrawal/Insertion). 3. **Controlled Acts/Impulses/Feelings:** (Passivity phenomena/Made phenomena). 4. **Delusional Perception:** A normal perception followed by a private, highly significant, and typically delusional conclusion. *Note: FRS are no longer required for a diagnosis in DSM-5, but they remain a high-yield topic for competitive exams.*

Practice by Chapter

Schizophrenia: Epidemiology and Etiology

Practice Questions

Schizophrenia: Clinical Features

Practice Questions

Schizophrenia: Treatment

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Schizoaffective Disorder

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Delusional Disorders

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Brief Psychotic Disorder

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Substance-Induced Psychotic Disorders

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Psychosis in Medical Conditions

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First Episode Psychosis

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Treatment-Resistant Psychosis

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Rehabilitation in Psychotic Disorders

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Outcome and Prognosis

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