Psychotic Disorders — MCQs

A 44-year-old man presents with a four-year history of fears that his mathematical abilities have been deteriorating, believing an "alien force disguised as a human being" is responsible. He has isolated himself, left his family, and resigned from his teaching position three years ago. He now supports himself by collecting cans. His affect is blunted, and his appearance is disheveled, unshaven, and unwashed. Which of the following is least suggestive of a schizophrenic disorder in this man?

Q89Easy

A patient presents with a one-month history of abnormal hallucinations and delusions. The patient lacks insight into their changed behavior. What is the likely diagnosis?

Q90Medium

A 25-year-old male complains of a visual hallucination of a transparent phantom of his own body. What is the most likely diagnosis?

Psychotic Disorders Indian Medical PG Practice Questions and MCQs

Question 81: The presence of delusion, hallucination, and disturbed cognitive functions indicate which of the following?

A. Paranoid Psychosis
B. Obsessive-Compulsive Disorder
C. Dissociative disorder
D. Organic Brain Syndrome (Correct Answer)

Explanation: **Explanation:** The core of this question lies in identifying the **"disturbed cognitive functions"** as the differentiating factor. While delusions and hallucinations are common in many psychiatric conditions, the impairment of cognition (memory, orientation, attention, and consciousness) is the hallmark of **Organic Brain Syndrome (OBS)**. 1. **Why Organic Brain Syndrome is correct:** OBS (now often referred to as Neurocognitive Disorders) refers to physical diseases of the brain that cause mental dysfunction. The triad of **psychotic symptoms** (delusions/hallucinations) combined with **cognitive deficits** (disorientation, memory loss, or clouding of consciousness) strongly points toward an organic etiology, such as Delirium or Dementia, rather than a functional psychiatric illness. 2. **Why other options are incorrect:** * **Paranoid Psychosis:** This is a functional psychosis (like Schizophrenia). While it features prominent delusions and hallucinations, the **sensorium remains clear**, and cognitive functions are typically preserved in the early to middle stages. * **Obsessive-Compulsive Disorder (OCD):** This is an anxiety-related disorder characterized by obsessions and compulsions. Insight is usually preserved, and there are no hallucinations or cognitive impairments. * **Dissociative Disorder:** These involve a breakdown of memory, identity, or perception (e.g., dissociative amnesia), but they are psychogenic in origin and do not present with true psychotic hallucinations or global cognitive decline. **High-Yield Clinical Pearls for NEET-PG:** * **Visual Hallucinations:** More common in organic states (OBS/Delirium) than in functional states (Schizophrenia). * **Fluctuating Consciousness:** The pathognomonic sign of Delirium (Acute Organic Brain Syndrome). * **Rule of Thumb:** Any psychiatric patient presenting with disorientation or altered consciousness must be investigated for an organic cause (e.g., metabolic imbalance, infection, or toxicity) before diagnosing a primary psychiatric disorder.

Question 82: What is a differentiating feature between neurosis and psychosis?

A. Insight is preserved
B. Lack of insight (Correct Answer)
C. Personality and behavior preserved
D. None of the above

Explanation: ### Explanation The fundamental distinction between **neurosis** and **psychosis** lies in the patient’s relationship with reality and their self-awareness regarding their condition. **1. Why "Lack of Insight" is the Correct Answer:** Insight refers to the patient's ability to recognize that their symptoms (such as hallucinations or delusions) are abnormal and part of a mental illness. In **psychosis** (e.g., Schizophrenia, Mania), there is a complete **loss of insight** and a break from reality; the patient believes their distorted perceptions are real. In contrast, in **neurosis** (e.g., Anxiety disorders, OCD), insight is typically **preserved**—the patient recognizes their symptoms as distressing and irrational. Therefore, the *lack* of insight is the hallmark feature that differentiates psychosis from neurosis. **2. Analysis of Incorrect Options:** * **Option A (Insight is preserved):** This is a feature of neurosis, not a differentiating feature that defines the transition into psychosis. * **Option C (Personality and behavior preserved):** While personality is generally more intact in neurosis and disorganized in psychosis, this is not as definitive or pathognomonic as the status of insight. Behavioral changes can occur in both, though they are more bizarre in psychosis. **3. NEET-PG Clinical Pearls:** * **Reality Testing:** This is impaired in psychosis but intact in neurosis. * **Judgment:** Usually impaired in psychosis; generally intact in neurosis. * **High-Yield Distinction:** * **Neurosis:** Contact with reality is maintained; symptoms are "ego-dystonic" (perceived as alien/distressing). * **Psychosis:** Contact with reality is lost; symptoms are often "ego-syntonic" (perceived as part of the self). * **Note:** In the modern DSM-5/ICD-11, the term "neurosis" is less commonly used as a formal diagnosis, but it remains a high-yield conceptual framework for competitive exams.

Question 83: A patient states, "I ate rice in the morning, fish live in water." Which of the following thought disorders is most suggested by this statement?

A. Loosening of association (Correct Answer)
B. Flight of ideas
C. Thought insertion
D. Tangentiality

Explanation: ### Explanation **1. Why "Loosening of Association" is Correct:** Loosening of association (also known as **Knight’s Move thinking** or derailment) is a formal thought disorder where the connection between successive thoughts is lost or becomes so obscure that the listener cannot follow the logic. In the given statement, "I ate rice in the morning" and "fish live in water" are two independent, grammatically correct facts, but they lack any logical or meaningful bridge. This "slippage" of logic is a hallmark symptom of **Schizophrenia**. **2. Why Other Options are Incorrect:** * **Flight of Ideas:** Characterized by rapid shifting from one idea to another, but unlike loosening of association, there is usually a **discernible connection** (often based on puns, rhyming, or environmental stimuli/distractibility). It is the hallmark of **Mania**. * **Thought Insertion:** A delusional belief (thought alienation) where the patient feels that thoughts are being "put into" their mind by an external agency. It is a disorder of thought **possession**, not form. * **Tangentiality:** The patient responds to a question in an oblique or irrelevant manner. The thought never returns to the original point. While similar to derailment, tangentiality is specifically a response to a stimulus (a question). **3. NEET-PG High-Yield Pearls:** * **Loosening of Association:** Pathognomonic for Schizophrenia (Bleuler’s 4 As). * **Word Salad (Incoherence):** The most extreme form of loosening of association where even the grammatical structure is lost. * **Flight of Ideas:** Associated with "Pressure of Speech" in Bipolar Disorder (Manic episode). * **Neologism:** Coining new words that have meaning only to the patient; also common in Schizophrenia.

Question 84: Which of the following is considered a first-rank symptom of schizophrenia?

A. Third-person auditory hallucinations (Correct Answer)
B. Delusional misconception
C. Nihilistic delusion
D. Delusion of self-reference

Explanation: ### Explanation **Kurt Schneider** proposed **First-Rank Symptoms (FRS)** in 1959 to differentiate schizophrenia from other psychotic disorders. These symptoms are highly characteristic of schizophrenia, though not pathognomonic. **Why Option A is Correct:** **Third-person auditory hallucinations** (voices arguing or voices giving a running commentary on the patient's actions) are classic Schneiderian FRS. In these cases, the patient hears voices talking *about* them rather than *to* them. Other auditory FRS include **Thought Echo** (Gedankenlautwerden). **Analysis of Incorrect Options:** * **B. Delusional Misconception:** This is not a standard psychiatric term. The FRS related to delusions is **Delusional Perception** (a normal perception followed by a private, illogical, and delusional meaning). * **C. Nihilistic Delusion (Cotard’s Syndrome):** This is the belief that one is dead, decomposing, or does not exist. It is most commonly associated with **severe psychotic depression**, not schizophrenia FRS. * **D. Delusion of Self-Reference:** While common in schizophrenia, it is considered a **Second-Rank Symptom**. The patient believes neutral events (like a news report) refer specifically to them. **High-Yield Clinical Pearls for NEET-PG:** * **Mnemonic for FRS (ABCD):** * **A**uditory Hallucinations (Running commentary, voices arguing, thought echo). * **B**roadcasting of thoughts (along with Thought Withdrawal and Insertion). * **C**ontrolled Feelings/Impulses (Passivity phenomena/Made acts). * **D**elusional Perception. * **Note:** ICD-11 and DSM-5 have reduced the emphasis on FRS because they lack high diagnostic specificity, but they remain a favorite topic for competitive exams. * **Passivity Phenomena:** The core of FRS is the loss of the boundary between the "self" and the "environment."

Question 85: Which subtype of schizophrenia is characterized by grossly disorganized behavior, severe personality deterioration, and the worst prognosis?

A. Hebephrenic (Correct Answer)
B. Catatonic
C. Simple
D. Paranoid

Explanation: **Explanation:** **Hebephrenic Schizophrenia** (also known as **Disorganized Schizophrenia**) is characterized by a triad of disorganized speech, disorganized behavior, and flat or inappropriate affect (e.g., "giggling" or "silly" behavior). It typically has an **early onset** (usually between ages 15–25) and is associated with rapid and severe **personality deterioration**. Because of its early onset and poor response to treatment, it carries the **worst prognosis** among all subtypes. **Analysis of Incorrect Options:** * **Catatonic Schizophrenia:** Characterized by psychomotor disturbances ranging from stupor and waxy flexibility to purposeless excitement. It generally has a **good prognosis** if treated promptly with benzodiazepines or ECT. * **Simple Schizophrenia:** Features an insidious onset of negative symptoms (apathy, social withdrawal) without prominent hallucinations or delusions. While it has a poor prognosis due to its chronic nature, it lacks the "grossly disorganized behavior" seen in Hebephrenia. * **Paranoid Schizophrenia:** The most common subtype, characterized by stable delusions and hallucinations. It has the **best prognosis** because personality remains relatively intact and it typically presents at a later age. **High-Yield Clinical Pearls for NEET-PG:** * **Best Prognosis:** Paranoid Schizophrenia. * **Worst Prognosis:** Hebephrenic Schizophrenia. * **Schneiderian First Rank Symptoms (FRS):** Most commonly seen in Paranoid Schizophrenia; least common in Hebephrenic. * **ICD-10 vs. DSM-5:** Note that DSM-5 has removed these subtypes, but they remain high-yield for NEET-PG based on ICD-10 classifications.

Question 86: A patient involved in a car accident was admitted to the ICU for six months. After discharge, she frequently wakes up at night feeling terrified and experiences fear when sitting in a car again. What is the most likely diagnosis?

A. Panic Disorder
B. Phobia
C. Conversion disorder
D. Post-traumatic stress disorder (Correct Answer)

Explanation: ### Explanation **Correct Answer: D. Post-traumatic stress disorder (PTSD)** The patient presents with the classic triad of PTSD following a life-threatening event (a severe car accident and six-month ICU stay): 1. **Re-experiencing:** Waking up terrified (nightmares) and intrusive memories. 2. **Avoidance/Hyperarousal:** Experiencing fear when sitting in a car (avoidance of triggers or autonomic arousal). 3. **Duration:** Symptoms occurring after discharge (likely >1 month). The core of PTSD is the development of characteristic symptoms following exposure to an extreme traumatic stressor involving actual or threatened death or serious injury. **Why other options are incorrect:** * **A. Panic Disorder:** Characterized by recurrent, *unexpected* panic attacks without a specific external trigger. Here, the fear is specifically linked to the trauma (the car). * **B. Phobia:** While she fears cars, a simple phobia does not explain the nightmares or the history of a major traumatic event. PTSD is a more comprehensive diagnosis encompassing these symptoms. * **C. Conversion Disorder (Functional Neurological Symptom Disorder):** Involves unexplained deficits in voluntary motor or sensory functions (e.g., paralysis, blindness) triggered by psychological stress, which are not present here. **Clinical Pearls for NEET-PG:** * **Timeline is Key:** * < 3 days: Normal stress reaction. * 3 days to 1 month: **Acute Stress Disorder (ASD)**. * > 1 month: **PTSD**. * **First-line Treatment:** Trauma-focused Cognitive Behavioral Therapy (CBT) and **SSRIs** (e.g., Sertraline, Paroxetine). * **Prazosin:** High-yield drug used specifically to reduce **nightmares** in PTSD patients. * **Complex PTSD:** Often involves long-term, repeated trauma (e.g., childhood abuse) rather than a single event.

Question 87: Which of the following is not considered a bizarre delusion?

A. I am followed by aliens from another universe.
B. There is a chip inserted in my head to locate me.
C. My wife is definitely having an affair with a colleague. (Correct Answer)
D. I am an immortal power.

Explanation: ### Explanation The core concept in this question is the distinction between **Bizarre** and **Non-bizarre** delusions. **1. Why Option C is Correct:** A **non-bizarre delusion** is a false, fixed belief involving situations that are **plausible** and could actually happen in real life (e.g., being followed, poisoned, or cheated on). The belief that a spouse is having an affair (Delusion of Infidelity/Othello Syndrome) is a non-bizarre delusion because, while false in the context of the patient's illness, it is physically possible and understandable within the realm of human experience. **2. Analysis of Incorrect Options (Bizarre Delusions):** A **bizarre delusion** is a belief that is clearly implausible, not understandable, and not derived from ordinary life experiences. * **Option A (Aliens):** Extraterrestrial abduction or surveillance is physically impossible and culturally alien to ordinary experience. * **Option B (Chip insertion):** While technology exists, the specific belief of a secret, undetectable chip used for global tracking is a classic example of a bizarre delusion of control/persecution. * **Option D (Immortal power):** Grandiose delusions involving supernatural abilities or biological impossibility (immortality) are inherently bizarre. **3. Clinical Pearls for NEET-PG:** * **DSM-5 Criteria:** The distinction between bizarre and non-bizarre delusions was previously used to diagnose Schizophrenia subtypes, but now it serves primarily as a descriptive feature. * **Delusional Disorder:** Characterized primarily by **non-bizarre delusions** lasting at least one month, without the prominent hallucinations or "downward drift" seen in Schizophrenia. * **Schneiderian First Rank Symptoms (FRS):** Many bizarre delusions (like thought insertion or delusions of control) are considered Pathognomonic for Schizophrenia. * **Key Distinction:** If a belief is "physically impossible," it is Bizarre. If it is "highly unlikely but possible," it is Non-bizarre.

Question 88: A 44-year-old man presents with a four-year history of fears that his mathematical abilities have been deteriorating, believing an "alien force disguised as a human being" is responsible. He has isolated himself, left his family, and resigned from his teaching position three years ago. He now supports himself by collecting cans. His affect is blunted, and his appearance is disheveled, unshaven, and unwashed. Which of the following is least suggestive of a schizophrenic disorder in this man?

A. Delusional system
B. Four-year history of symptoms
C. Age of onset (Correct Answer)
D. Decrease in level of functioning

Explanation: In schizophrenia, the **age of onset** is a critical diagnostic and prognostic factor. For males, the peak age of onset is typically between **15 and 25 years**. In this case, the patient is 44 years old with a four-year history, meaning his symptoms began around age 40. This is considered a **late-onset** presentation, which is more characteristic of Delusional Disorder or organic causes rather than classic Schizophrenia. ### Explanation of Options: * **Age of Onset (Correct):** As mentioned, schizophrenia typically manifests in early adulthood (late teens to mid-20s for men). An onset at age 40 is atypical and "least suggestive" of the standard clinical profile. * **Delusional System:** The belief that an "alien force" is stealing his abilities is a **bizarre delusion**, which is a hallmark (First Rank Symptom) of schizophrenia. * **Four-year history:** According to ICD-11 and DSM-5, symptoms must persist for at least 1 month and 6 months respectively. A four-year duration strongly supports a chronic psychotic disorder like schizophrenia. * **Decrease in level of functioning:** Social and occupational dysfunction (resigning from work, social isolation, poor hygiene/self-neglect) are core negative symptoms and diagnostic criteria for schizophrenia. ### High-Yield Clinical Pearls for NEET-PG: * **Gender Differences:** Males have an earlier onset (15–25 years) and a poorer prognosis compared to females (25–35 years). * **Late-onset Schizophrenia:** Defined as onset after age 40; it is more common in females and often features paranoid delusions with preserved affect. * **Negative Symptoms:** The "5 A's" (Affective flattening, Alogia, Avolition, Anhedonia, Attention deficit) are often more debilitating than hallucinations. * **Prognosis:** Good prognostic factors include late onset, female sex, presence of mood symptoms, and a clear precipitating stressor.

Question 89: A patient presents with a one-month history of abnormal hallucinations and delusions. The patient lacks insight into their changed behavior. What is the likely diagnosis?

A. Paranoia
B. Depression
C. Psychosis (Correct Answer)
D. Schizophrenia

Explanation: ### Explanation **Correct Answer: C. Psychosis** **Why it is correct:** Psychosis is a clinical syndrome characterized by a "loss of contact with reality." The hallmark features include **hallucinations** (perceptual disturbances), **delusions** (fixed false beliefs), and a **lack of insight** (the patient is unaware that their experiences are abnormal). In this question, the presence of these core symptoms for a duration of one month fits the broad definition of a psychotic state. Psychosis is an umbrella term rather than a single specific disease entity. **Why the other options are incorrect:** * **A. Paranoia:** This is a symptom or a subtype of personality/delusional disorder, not a diagnosis for a patient presenting with both hallucinations and delusions. * **B. Depression:** While "Psychotic Depression" exists, the primary feature of depression is a persistent low mood or anhedonia. The question does not mention any mood symptoms. * **D. Schizophrenia:** According to ICD-11 and DSM-5 criteria, a diagnosis of Schizophrenia typically requires symptoms to persist for **at least six months** (DSM-5) or one month with specific functional decline (ICD-11). However, "Psychosis" is the more fundamental clinical description for the symptoms provided. If symptoms last less than one month, it is termed Brief Psychotic Disorder; if between 1–6 months, it is Schizophreniform Disorder. **NEET-PG High-Yield Pearls:** * **Insight:** The most important clinical feature to distinguish psychosis from neurosis (like OCD or Anxiety) is the **loss of insight**. * **Hallucination vs. Illusion:** Hallucinations occur without an external stimulus, whereas illusions are misinterpretations of actual external stimuli. * **Schneider’s First Rank Symptoms (SFRS):** These are pathognomonic for Schizophrenia and include audible thoughts, voices arguing, and somatic passivity. * **Duration Criteria:** * < 1 month: Brief Psychotic Disorder. * 1–6 months: Schizophreniform Disorder. * \> 6 months: Schizophrenia (DSM-5).

Question 90: A 25-year-old male complains of a visual hallucination of a transparent phantom of his own body. What is the most likely diagnosis?

A. Capgras syndrome
B. Lycanthropy
C. Cotard syndrome
D. Autoscopic psychosis (Correct Answer)

Explanation: **Explanation:** The correct answer is **Autoscopic psychosis**. This is a rare phenomenological experience where an individual perceives a vision of their own body in external space. **1. Why Autoscopic Psychosis is Correct:** Autoscopy (from Greek *autos* "self" and *skopeo* "to look") refers to the experience of seeing a "double" or a phantom of oneself. In this condition, the patient sees a mirror image of themselves, which is often described as **transparent, colorless, or ghostly**. Unlike a reflection in a mirror, the phantom may mimic the patient’s movements or remain stationary. It is often associated with organic brain lesions (especially in the parieto-occipital region), epilepsy, or severe psychological stress. **2. Analysis of Incorrect Options:** * **Capgras Syndrome:** A delusional misidentification where the patient believes a close relative or friend has been replaced by an identical-looking **imposter**. * **Lycanthropy:** A rare delusion where the patient believes they are being transformed into an **animal** (traditionally a wolf). * **Cotard Syndrome:** Also known as "Walking Corpse Syndrome," it is a nihilistic delusion where the patient believes they are **dead**, rotting, or have lost their internal organs/blood. **3. Clinical Pearls for NEET-PG:** * **Heautoscopy:** A variation of autoscopy where the patient sees a double but is unsure which "self" is the real one (associated with vestibular dysfunction). * **Out-of-Body Experience (OBE):** The patient feels their consciousness has left their body and is looking down at their physical self from an elevated perspective. * **Fregoli Syndrome:** The delusional belief that different people are actually a single person in disguise.

Practice by Chapter

Schizophrenia: Epidemiology and Etiology

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Schizophrenia: Clinical Features

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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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