Psychotic Disorders Practice Questions

Q: Psychosis is NOT associated with which of the following?

Phobia. ### Explanation The core feature of **Psychosis** is the **loss of contact with reality**. This is clinically characterized by the presence of delusions, hallucinations, and a lack of insight. **1. Why Phobia is the Correct Answer:** A **Phobia** is an **Anxiety Disorder**, not a psychotic one. In phobias, the patient experiences an irrational, persistent fear of an object or situation. Crucially, the **insight is preserved**—the patient recognizes that their fear is excessive or unreasonable. Because reality testing remains intact, it is classified as a neurotic disorder rather than a psychotic one. **2. Analysis of Incorrect Options:** * **Delusion (A):** This is a hallmark of psychosis. It is defined as a fixed, false belief that is out of keeping with the patient’s social and cultural background and cannot be corrected by logic. * **Depression (B):** Severe depression can present with **psychotic features** (e.g., nihilistic delusions or auditory hallucinations). This is termed "Psychotic Depression." * **Mania (C):** Acute manic episodes in Bipolar Disorder often involve psychotic symptoms, most commonly **delusions of grandeur** or flight of ideas reaching a psychotic intensity. **Clinical Pearls for NEET-PG:** * **Insight:** The presence of insight usually distinguishes Neurosis (Anxiety, Phobia, OCD) from Psychosis (Schizophrenia, Mania). * **Schneider’s First Rank Symptoms (FRS):** These are high-yield diagnostic criteria for Schizophrenia (a primary psychotic disorder). * **Formal Thought Disorder:** Often seen in psychosis (e.g., loosening of associations), whereas thought processes in phobias are logical but anxiety-driven.

Q: A 40-year-old air-conditioner technician is referred to a psychiatrist because of a change in behavior and deterioration in functioning. When he feels the gust of cold air coming from the air conditioner, he interprets the cold air as poison gas from Mars. This phenomenon can be described as?

Delusional perception. ### Explanation The correct answer is **Delusional perception**. **1. Why Delusional Perception is Correct:** Delusional perception is a **primary delusion** and one of **Schneider’s First Rank Symptoms (SFRS)** of schizophrenia. It occurs in two stages: * **Stage 1:** A normal, real perception occurs (the technician feels the cold air). * **Stage 2:** A delusional, private, and highly significant meaning is attached to that perception (the air is "poison gas from Mars"). There is no logical connection between the perception and the interpretation. In this case, the sensory stimulus (cold air) is real and correctly identified, but the meaning attributed to it is delusional. **2. Analysis of Incorrect Options:** * **A. Delusional memory:** This is a delusion triggered by a past memory (e.g., "I remember when I was five, the doctor gave me a shot; that’s when they implanted the tracking chip"). * **C. Tactile hallucination:** A hallucination is a perception in the *absence* of an external stimulus. Here, the stimulus (cold air) is present; the error lies in the *interpretation*, not the perception itself. * **D. Primary delusion:** While delusional perception is a *type* of primary delusion, "Delusional perception" is the most specific and accurate phenomenological term for this two-stage process. **3. Clinical Pearls for NEET-PG:** * **Schneider’s First Rank Symptoms (SFRS):** Includes delusional perception, somatic passivity, thought insertion/withdrawal/broadcast, and specific auditory hallucinations (third-person, running commentary). * **The "Two-Membered" Process:** Always look for the link between a real stimulus and a bizarre meaning to identify delusional perception. * **Primary vs. Secondary Delusions:** Primary delusions (Autochthonous) arise suddenly ("out of the blue"), whereas secondary delusions are understandable in the context of other symptoms like mood or hallucinations.

Q: What is "Folie à deux"?

Shared delusion with another person. **Explanation:** **Folie à deux** (literally "madness of two") is a rare clinical syndrome, now classified in the DSM-5 under "Other Specified Schizophrenia Spectrum and Other Psychotic Disorder." It occurs when a symptom of psychosis—most commonly a **delusion**—is transmitted from one individual (the "primary" or "inducer") to another (the "secondary" or "recipient"). This typically happens between two people who share a close emotional bond and live in relative social isolation. **Why the other options are incorrect:** * **Option A (Delusion of doubles):** This refers to **Capgras Syndrome**, a delusional misidentification where a person believes a close relative or friend has been replaced by an identical-looking impostor. * **Option B (Substance abuse disorder):** While substance use can induce psychosis, Folie à deux is a primary psychological phenomenon based on interpersonal dynamics, not chemical intoxication. * **Option D (Dissociative disorder):** These disorders involve a breakdown of memory, identity, or perception (e.g., Dissociative Amnesia or DID) and do not typically involve the shared delusional content characteristic of Folie à deux. **NEET-PG High-Yield Pearls:** * **Synonym:** It is also known as **Shared Psychotic Disorder**. * **Management:** The primary step in management is **separating the two individuals**. Often, the delusion in the "secondary" person resolves once they are removed from the influence of the "primary" inducer. * **The Inducer:** Usually has a chronic psychotic illness (like Schizophrenia) and is the more dominant personality in the relationship. * **Variations:** If shared by more than two people, it is called *folie à trois*, *folie à quatre*, or *folie à plusieurs* (madness of many).

Q: A teenager is diagnosed with schizophrenia. Which of the following is true for schizophrenia?

It is a disorder of thought. **Explanation:** **Schizophrenia** is primarily defined as a **disorder of thought**, characterized by a fundamental distortion of thinking, perception, and affect. In psychiatry, it is classified as a psychotic disorder where the patient loses touch with reality. The core pathology involves disturbances in the **form** (e.g., loosening of associations), **content** (e.g., delusions), and **stream** of thought. **Analysis of Options:** * **Option A (Correct):** Schizophrenia involves "Formal Thought Disorder." Patients exhibit symptoms like delusions (fixed false beliefs) and disorganized thinking, which are hallmark features of the disease. * **Option B (Incorrect):** This is a common myth. "Split personality" refers to **Dissociative Identity Disorder (DID)**. The "schizo" in schizophrenia refers to a "split" between emotion, thought, and behavior (intra-psychic ataxia), not multiple personalities. * **Option C & D (Incorrect):** While stress and trauma can act as "triggers" in genetically predisposed individuals (Stress-Diathesis Model), they are not the primary causes. Schizophrenia is a **neurodevelopmental disorder** with strong genetic and biological components (e.g., Dopamine hypothesis). **Clinical Pearls for NEET-PG:** * **Schneider’s First Rank Symptoms (FRS):** High-yield diagnostic criteria including audible thoughts, somatic passivity, and delusional perception. * **Bleuler’s 4 A’s:** Ambivalence, Autism, Affective flattening, and Associative looseness. * **Neurobiology:** Associated with increased dopaminergic activity in the mesolimbic pathway (positive symptoms) and decreased activity in the mesocortical pathway (negative symptoms). * **Prognosis:** Better prognosis is associated with late onset, female sex, and presence of positive symptoms.

Q: All of the following are associated with a better prognosis in schizophrenia except?

Negative symptoms. In schizophrenia, prognosis is determined by the clinical presentation, demographic factors, and the mode of onset. **Explanation of the Correct Answer:** **Option C (Negative Symptoms)** is associated with a **poor prognosis**. Negative symptoms (e.g., apathy, anhedonia, affective flattening, and poverty of speech) are often linked to structural brain changes (like ventricular enlargement), cognitive impairment, and a poor response to typical antipsychotics. These symptoms tend to be chronic and lead to significant social and occupational dysfunction. **Explanation of Incorrect Options:** * **A. Late onset:** Patients who develop schizophrenia later in life (typically females) tend to have better premorbid functioning and more mature coping mechanisms, leading to a better prognosis. * **B. Married status:** Being married is a proxy for good premorbid social adjustment and provides a strong social support system, both of which are positive prognostic indicators. * **D. Acute onset:** An abrupt onset (often triggered by a clear stressor) is associated with a better outcome compared to an insidious, slow onset, as it often responds more rapidly to treatment. **High-Yield Clinical Pearls for NEET-PG:** * **Good Prognostic Factors:** Female sex, positive symptoms (hallucinations/delusions), mood symptoms (depression/anxiety), and a family history of mood disorders. * **Poor Prognostic Factors:** Early onset (males), insidious onset, family history of schizophrenia, and frequent relapses. * **Key Fact:** The presence of **Positive Symptoms** (Type I Schizophrenia) generally predicts a better response to medication than **Negative Symptoms** (Type II Schizophrenia).

Q: Which of the following is NOT found in catatonic schizophrenia?

Somatic passivity. **Explanation:** The correct answer is **Somatic Passivity** because it is a **First Rank Symptom (FRS)** of Schizophrenia, specifically a disorder of the "experience of self" or "delusion of control," rather than a motor (catatonic) symptom. **1. Why Somatic Passivity is the correct answer:** Somatic passivity involves the patient’s belief that their body is being influenced or acted upon by an external agency (e.g., "aliens are sending electrical currents into my limbs"). While it is a hallmark of Schizophrenia (Schneiderian FRS), it is a **perceptual/delusional phenomenon**, not a motor sign of catatonia. **2. Analysis of Incorrect Options (Catatonic Features):** * **Waxy Flexibility (Cerea Flexibilitas):** A classic catatonic sign where the patient’s limbs can be molded into a position and held there for a long duration, resisting gravity. * **Automatic Obedience:** The patient follows every instruction from the examiner in a robot-like fashion, regardless of the nature of the request. * **Gegenhalten (Paratonia):** A form of "oppositional" negativism where the patient offers a resistance to passive movement that increases proportionally to the force applied by the examiner. **Clinical Pearls for NEET-PG:** * **Catatonia** is no longer considered a subtype of Schizophrenia in DSM-5; it is now a specifier that can occur across various psychiatric and medical conditions. * **Drug of Choice (DOC):** Lorazepam (Benzodiazepines) is the first-line treatment for catatonia (Lorazepam Challenge Test). * **Definitive Treatment:** Electroconvulsive Therapy (ECT) is highly effective if medications fail or if the condition is life-threatening (Malignant Catatonia). * **Ambitendence:** A catatonic sign where the patient makes conflicting movements (e.g., starts to shake hands but pulls back repeatedly).

Q: Which of the following symptoms of schizophrenia responds quickly to treatment with medication?

Auditory Hallucinations. In schizophrenia, symptoms are broadly categorized into **Positive symptoms** (excess or distortion of normal function) and **Negative symptoms** (diminution or loss of normal function). **Why Auditory Hallucinations is correct:** Auditory hallucinations are a hallmark **positive symptom**. The pathophysiology of positive symptoms is primarily linked to **dopaminergic hyperactivity** in the **mesolimbic pathway** [1]. Antipsychotic medications (both typical and atypical) work by blocking D2 receptors in this pathway. Because these medications directly target the neurochemical imbalance responsible for positive symptoms, patients often show a relatively rapid response (usually within days to a few weeks) regarding hallucinations and delusions [3]. **Why the other options are incorrect:** * **Apathy (A), Poverty of thought content (C), and Anhedonia (D)** are all **Negative symptoms** [3]. * Negative symptoms are associated with **dopaminergic hypoactivity** in the **mesocortical pathway** and structural brain changes (like ventricular enlargement) [1]. * These symptoms are notoriously resistant to conventional antipsychotics. While atypical antipsychotics (SGAs) may offer slight improvement due to serotonin-dopamine antagonism, negative symptoms generally persist long-term and respond much more slowly, if at all, compared to positive symptoms [2]. **NEET-PG High-Yield Pearls:** * **Schneider’s First Rank Symptoms (FRS):** Auditory hallucinations (specifically third-person or running commentary) are key FRS [3]. * **Prognosis:** The presence of predominant positive symptoms is a **good prognostic factor**, as they respond well to medication. Predominant negative symptoms indicate a **poor prognosis** [2]. * **Pathway Mnemonic:** **M**esolimbic = **M**adness (Positive symptoms); **M**esocortical = **M**ud/Muffled (Negative symptoms/Cognitive dulling).

Q: All of the following are considered as first rank symptoms of Schizophrenia EXCEPT?

Anhedonia. **Explanation:** The correct answer is **Anhedonia**. **Kurt Schneider** defined **First Rank Symptoms (FRS)** in 1959 to differentiate schizophrenia from other psychotic disorders. These symptoms are considered pathognomonic for schizophrenia in the absence of organic brain disease. **Anhedonia** (the inability to feel pleasure) is a **Negative Symptom** of schizophrenia, not a First Rank Symptom. Negative symptoms are more commonly associated with chronic schizophrenia and poor prognosis but lack the diagnostic specificity of FRS. **Analysis of Options:** * **Thought Broadcast (Option A):** This is a "Thought Alienation" symptom where the patient believes their private thoughts are being transmitted to others via external media (radio, TV, or air). It is a classic FRS. * **Third Person Auditory Hallucination (Option B):** This involves hearing voices talking *about* the patient in the third person or voices providing a running commentary on the patient's actions. This is a hallmark FRS. * **Somatic Passivity (Option C):** This is a "Made Phenomenon" where the patient believes their body is being acted upon by an external force, often involving strange physical sensations imposed from outside. It is a core FRS. **Clinical Pearls for NEET-PG:** * **Mnemonic for FRS (ABCD):** **A**uditory hallucinations (3rd person/commentary), **B**roadcasting of thoughts, **C**ontrolled feelings/impulses (Passivity), **D**elusional Perception. * **ICD-11 & DSM-5 Update:** While historically significant, the diagnostic importance of FRS has been de-emphasized in newer classifications (DSM-5) because they are not entirely specific to schizophrenia (can occur in Bipolar Disorder). * **Negative Symptoms (The 5 A's):** Anhedonia, Affective flattening, Alogia, Avolition, and Asociality. These are *not* Schneiderian FRS.

Q: What are the most important receptors involved in schizophrenia?

D2. **Explanation:** The pathophysiology of schizophrenia is most strongly associated with the **Dopamine Hypothesis**. This theory suggests that symptoms arise from dysregulation of dopaminergic pathways. Specifically, **D2 receptors** are the primary targets of all conventional (typical) and most unconventional (atypical) antipsychotics. * **Why D2 is correct:** Hyperactivity of dopamine at D2 receptors in the **mesolimbic pathway** is linked to positive symptoms (hallucinations, delusions). Conversely, dopamine deficiency in the **mesocortical pathway** is linked to negative symptoms. The clinical efficacy of antipsychotics is directly proportional to their D2 receptor-binding affinity. **Analysis of Incorrect Options:** * **GABA / GABAA (Options A & B):** While GABAergic dysfunction (inhibitory deficit) is researched in schizophrenia, it is not the primary diagnostic or therapeutic target. GABA receptors are more clinically relevant to anxiety disorders and benzodiazepine action. * **5-HT (Option D):** Serotonin (5-HT2A) receptors are important in the mechanism of **Atypical Antipsychotics** (e.g., Clozapine, Risperidone) to reduce extrapyramidal side effects and improve negative symptoms, but D2 remains the fundamental receptor involved in the core psychotic process. **High-Yield Clinical Pearls for NEET-PG:** * **Nigrostriatal Pathway:** Blockade of D2 here leads to **Extrapyramidal Symptoms (EPS)** and Tardive Dyskinesia. * **Tuberoinfundibular Pathway:** Blockade of D2 here leads to **Hyperprolactinemia** (galactorrhea, gynecomastia). * **Glutamate Hypothesis:** Another high-yield concept; NMDA receptor hypofunction is also implicated in schizophrenia. * **Clozapine:** The only antipsychotic that shows high affinity for D4 receptors and is the drug of choice for treatment-resistant schizophrenia.

Question 1

Psychosis is NOT associated with which of the following?

Accepted Answer

Phobia

Answer

Delusion

Answer

Depression

Answer

Mania

Question 2

A 40-year-old air-conditioner technician is referred to a psychiatrist because of a change in behavior and deterioration in functioning. When he feels the gust of cold air coming from the air conditioner, he interprets the cold air as poison gas from Mars. This phenomenon can be described as?

Accepted Answer

Delusional perception

Answer

Delusional memory

Answer

Tactile hallucination

Answer

Primary delusion

Question 3

What is "Folie à deux"?

Accepted Answer

Shared delusion with another person

Answer

Delusion of doubles

Answer

Substance abuse disorder

Answer

Dissociative disorder

Question 4

A teenager is diagnosed with schizophrenia. Which of the following is true for schizophrenia?

Accepted Answer

It is a disorder of thought

Answer

It causes split personality

Answer

It is due to emotional turmoil

Answer

It is due to childhood trauma

Question 5

All of the following are associated with a better prognosis in schizophrenia except?

Accepted Answer

Negative symptoms

Answer

Late onset

Answer

Married status

Answer

Acute onset

Question 6

Which of the following is NOT found in catatonic schizophrenia?

Accepted Answer

Somatic passivity

Answer

Waxy flexibility

Answer

Automatic obedience

Answer

Gegenhalten

Question 7

Which of the following symptoms of schizophrenia responds quickly to treatment with medication?

Accepted Answer

Auditory Hallucinations

Answer

Apathy

Answer

Poverty of thought content

Answer

Anhedonia

Question 8

What is the duration required for the diagnosis of acute and transient psychosis?

Accepted Answer

2 weeks

Answer

1 week

Answer

1 month

Answer

6 months

Question 9

All of the following are considered as first rank symptoms of Schizophrenia EXCEPT?

Accepted Answer

Anhedonia

Answer

Thought broadcast

Answer

Third person auditory hallucination

Answer

Somatic passivity

Question 10

What are the most important receptors involved in schizophrenia?

Accepted Answer

D2

Answer

GABAA

Answer

GABA

Answer

5-HT

Psychotic Disorders — MCQs

Psychotic Disorders — MCQs

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