Psychotic Disorders Practice Questions

Q: A patient presents with an obnoxious smell and hallucinations. Which brain region lesion is most likely associated with these symptoms?

Temporal lobe lesion. **Explanation:** The clinical presentation of **olfactory hallucinations** (often described as an "obnoxious" or foul smell like burning rubber or garbage) is a classic localizing sign for **Temporal Lobe** pathology. **1. Why Temporal Lobe is Correct:** The primary olfactory cortex is located in the **uncus** and the piriform cortex, which are parts of the medial temporal lobe. Irritative lesions in this area, such as tumors or focal epilepsy (specifically **Uncinate Fits**), trigger these phantom smells. Additionally, the temporal lobe contains the hippocampus and amygdala, which are integral to the limbic system; lesions here frequently manifest as complex sensory hallucinations and emotional disturbances. **2. Why Other Options are Incorrect:** * **Frontal Lobe:** Lesions here typically present with executive dysfunction, personality changes (disinhibition or apathy), and primitive reflexes (e.g., snout, grasp). It does not primarily process sensory hallucinations. * **Parietal Lobe:** This region is responsible for somatosensory processing. Lesions lead to agnosia, apraxia, or disturbances in spatial orientation and body image (e.g., Gerstmann syndrome). * **Occipital Lobe:** This is the visual processing center. Lesions or seizures here result in **visual hallucinations** (often simple flashes or colors) or cortical blindness. **Clinical Pearls for NEET-PG:** * **Uncinate Fits:** Olfactory hallucinations preceding a seizure strongly suggest a temporal lobe origin. * **Schizophrenia vs. Organic:** While auditory hallucinations are common in Schizophrenia, **olfactory and gustatory hallucinations** should always prompt an investigation for organic causes (like temporal lobe epilepsy or tumors). * **Klüver-Bucy Syndrome:** Resulting from bilateral temporal lobe damage, it presents with hypersexuality, hyperphagia, and visual agnosia.

Q: Which is the first rank symptom described by Delusions?

Thought insertion. **Explanation:** **Kurt Schneider’s First Rank Symptoms (FRS)** are a group of specific symptoms used to diagnose Schizophrenia. These symptoms are characterized by a loss of ego boundaries, where the patient cannot distinguish between their own internal mental processes and external influences. **Why Thought Insertion is Correct:** Thought insertion is a classic **Delusion of Control/Passivity**. It is the belief that thoughts are being put into one’s mind by an external agency (e.g., "The government is planting ideas in my head via satellite"). Along with **thought withdrawal** and **thought broadcasting**, it forms the "Thought Alienation" triad, which is a core component of Schneider’s FRS. **Analysis of Incorrect Options:** * **A. Echolalia:** This is the automatic repetition of vocalizations made by another person. It is a feature of **Catatonia** or certain neurodevelopmental disorders, but it is not a First Rank Symptom. * **C. Autism:** In psychiatry, "Autistic thinking" (detachment from reality) is one of **Eugen Bleuler’s 4 A’s** of Schizophrenia, not a Schneiderian First Rank Symptom. * **D. Suicidal tendency:** While common in psychiatric disorders, this is a clinical risk factor and not a diagnostic symptom of any specific psychotic framework. **High-Yield Clinical Pearls for NEET-PG:** * **Schneider’s FRS Mnemonic (ABCD):** * **A**uditory Hallucinations (Third person, Running commentary, Echo/Gedankenlautwerden). * **B**eliefs (Delusional perception). * **C**ontrol (Passivity of affect, impulse, or volition). * **D**elusions of Thought (Insertion, Withdrawal, Broadcasting). * **Bleuler’s 4 A’s:** Ambivalence, Autism, Affective flattening, and Association looseness. * **Note:** FRS are no longer required for a diagnosis in DSM-5, but they remain highly relevant for exams and identifying "Schneiderian Schizophrenia."

Q: Prognosis of schizophrenia depends on which of the following factors?

Emotional flattening. ### Explanation The prognosis of Schizophrenia is determined by a combination of clinical features, onset patterns, and symptom types. In psychiatry, symptoms are broadly categorized into **Positive** and **Negative** symptoms. **Why "Emotional Flattening" is the Correct Answer:** Emotional flattening (or blunted affect) is a core **negative symptom** of Schizophrenia. Negative symptoms (the "5 A’s": Affective flattening, Alogia, Avolition, Anhedonia, and Attention deficit) are consistently associated with a **poor prognosis**. They tend to be chronic, respond poorly to typical antipsychotics, and are linked to structural brain changes (like ventricular enlargement) and significant functional impairment. **Analysis of Incorrect Options:** * **A. Atypical symptoms:** While "atypical" presentations can vary, the presence of **affective symptoms** (like depression or mania) actually indicates a *better* prognosis (Schizoaffective features). * **B. False belief:** This refers to **delusions**, which are **positive symptoms**. Positive symptoms (delusions, hallucinations, disorganized speech) generally respond better to medication and are associated with a *better* prognosis compared to negative symptoms. **NEET-PG High-Yield Pearls:** * **Good Prognostic Factors:** Late onset, female sex, married status, acute/sudden onset, presence of precipitating factors, positive symptoms, and mood symptoms. * **Poor Prognostic Factors:** Early/Insidious onset (e.g., Hebephrenic Schizophrenia), male sex, single/divorced status, negative symptoms (Emotional flattening), family history of schizophrenia, and poor premorbid personality. * **Most important predictor of outcome:** The level of premorbid adjustment and the duration of untreated psychosis (DUP).

Q: Which of the following is considered a Schneider's first-rank symptom?

Voices commenting on actions. **Explanation:** Kurt Schneider proposed **First-Rank Symptoms (FRS)** in 1959 to differentiate schizophrenia from other psychotic disorders. These symptoms are considered highly suggestive of schizophrenia in the absence of organic brain disease. **Why Option B is Correct:** **Voices commenting on one's actions** (Third-person auditory hallucinations) is one of the classic "Auditory Hallucinations" described by Schneider. In this symptom, the patient hears voices describing their movements or behaviors as they happen (e.g., "Now he is picking up the glass"). The other two specific auditory FRS are **voices arguing/discussing** and **thought echo** (Gedankenlautwerden). **Analysis of Incorrect Options:** * **A & C (Persecutory Delusion & Delusion of Guilt):** While these are common in schizophrenia and mood disorders, they are considered **Second-Rank Symptoms**. Schneider believed these delusions could occur in various psychiatric conditions and were not pathognomonic for schizophrenia. * **D (Incoherence):** This is a formal thought disorder. While it is a diagnostic criterion in DSM-5 and ICD-10, it is not part of Schneider’s original list of First-Rank Symptoms. **High-Yield Clinical Pearls for NEET-PG:** * **Mnemonic for FRS (ABCD):** * **A**uditory Hallucinations (Thought echo, 3rd person voices, running commentary). * **B**roadcasting of thoughts (and Thought Withdrawal/Insertion). * **C**ontrolled feelings/impulses/acts (Passivity phenomena/Made phenomena). * **D**elusional Perception (A normal perception followed by a private, highly significant, usually delusional conclusion). * **Note:** The presence of FRS is no longer mandatory for a diagnosis of schizophrenia in **DSM-5**, as they were found to be less specific than previously thought, though they remain high-yield for exams.

Q: Third-person hallucinations are characteristic of which of the following conditions?

Schizophrenia. **Explanation:** **Third-person auditory hallucinations** are a hallmark feature of **Schizophrenia**. In these hallucinations, the patient hears voices referring to them in the third person (e.g., "He is eating now" or "She is dangerous"). These are often accompanied by **running commentaries** (voices describing the patient's actions as they happen) or **voices arguing** about the patient. These specific symptoms are part of **Schneider’s First Rank Symptoms (SFRS)**, which are highly suggestive of Schizophrenia in the absence of organic brain disease. **Analysis of Incorrect Options:** * **Depression & Mania:** While auditory hallucinations can occur in severe mood disorders with psychotic features, they are typically **second-person** ("You are worthless") and **mood-congruent**. Third-person hallucinations are considered "mood-incongruent" and point strongly toward a primary psychotic disorder like Schizophrenia. * **Obsession:** Obsessions are recurrent, intrusive thoughts, images, or urges that the patient recognizes as their own (ego-dystonic). They are not sensory perceptions (hallucinations) and the patient usually maintains insight. **Clinical Pearls for NEET-PG:** * **Schneider’s First Rank Symptoms (SFRS):** Includes third-person hallucinations, running commentary, voices arguing, somatic passivity, and thought alienation (insertion, withdrawal, broadcasting). * **Auditory Hallucinations:** These are the most common type of hallucination in Schizophrenia. * **Visual Hallucinations:** If present, always rule out **Organic Brain Syndrome** or substance withdrawal (e.g., Delirium Tremens) first. * **Hypnagogic/Hypnopompic Hallucinations:** These occur while falling asleep or waking up and are considered physiological (commonly seen in Narcolepsy), not psychotic.

Q: Delusions in delirium are generally:

Transient. **Explanation:** Delirium is an acute neuropsychiatric syndrome characterized by a fluctuating course, altered consciousness, and global cognitive impairment. The correct answer is **Transient** because delusions in delirium are typically fleeting, poorly systematized, and fragmented. 1. **Why "Transient" is correct:** Unlike the fixed, well-organized delusions seen in Schizophrenia or Delusional Disorder, delusions in delirium lack stability. Because the patient’s level of consciousness and attention fluctuates throughout the day, their thought content remains disorganized and shifts rapidly. 2. **Why other options are incorrect:** * **Frightening:** While patients often experience fear due to visual hallucinations (zoopsia), the delusions themselves are not defined by being "frightening" as a diagnostic rule. * **Self-referential:** Ideas of reference are more characteristic of Schizophrenia or Mood Disorders with psychotic features. * **Nihilistic:** These are specific delusions (e.g., Cotard’s syndrome) where a patient believes they are dead or do not exist, typically associated with severe Psychotic Depression, not delirium. **High-Yield Clinical Pearls for NEET-PG:** * **Core Feature:** The hallmark of delirium is an **impairment of consciousness** (clouding of sensorium) and a **fluctuating** course (symptoms often worsen at night, known as "sundowning"). * **Hallucinations:** Visual hallucinations are much more common in delirium than auditory ones. * **EEG Finding:** Characteristically shows **generalized slowing** (except in Delirium Tremens, where there is low-voltage fast activity). * **Reversibility:** Delirium is usually secondary to an underlying medical condition (e.g., infection, electrolyte imbalance) and is reversible once the cause is treated.

Q: Which feature suggests schizophrenia rather than organic psychosis?

Third person auditory hallucination. **Explanation:** The distinction between functional psychosis (like Schizophrenia) and organic psychosis (due to medical conditions or substance use) is a high-yield topic in NEET-PG. **1. Why Option A is Correct:** **Third-person auditory hallucinations** (voices talking about the patient in the third person) and **running commentary** are considered **Schneiderian First Rank Symptoms (SFRS)**. These are highly characteristic of Schizophrenia. While not pathognomonic, their presence in a clear sensorium strongly points toward a functional psychotic disorder rather than an organic cause. **2. Why Incorrect Options are Wrong:** * **B. Split Personality:** This is a common layperson's misconception. "Split personality" refers to Dissociative Identity Disorder, not Schizophrenia. Schizophrenia involves a "splitting" of mental functions (thought, emotion, and behavior), not multiple identities. * **C. Visual Hallucinations:** These are the hallmark of **organic psychosis** (e.g., delirium, alcohol withdrawal, or head injury). While they can occur in schizophrenia, their presence should always prompt a clinician to rule out medical or neurological causes first. * **D. Altered Sensorium:** This refers to clouding of consciousness or disorientation. It is the defining feature of **Delirium (Organic Brain Syndrome)**. In Schizophrenia, the sensorium (orientation to time, place, and person) remains characteristically **clear**. **Clinical Pearls for NEET-PG:** * **Hallucinations:** Auditory = Most common in Schizophrenia; Visual/Tactile/Olfactory = Suggest Organic etiology. * **SFRS:** Includes audible thoughts (thought echo), voices arguing, voices commenting, and passivity phenomena. * **Age of Onset:** Schizophrenia typically starts in late teens to early 30s; new-onset psychosis in an elderly patient is almost always organic.

Question 1

A patient presents with an obnoxious smell and hallucinations. Which brain region lesion is most likely associated with these symptoms?

Accepted Answer

Temporal lobe lesion

Answer

Frontal lobe lesion

Answer

Parietal lobe lesion

Answer

Occipital lobe lesion

Question 2

All of the following are thought disorders, EXCEPT:

Accepted Answer

Visual Hallucination

Answer

Paranoia

Answer

OCD

Answer

Delusion

Question 3

Which is the first rank symptom described by Delusions?

Accepted Answer

Thought insertion

Answer

Echolalia

Answer

Autism

Answer

Suicidal tendency

Question 4

Prognosis of schizophrenia depends on which of the following factors?

Accepted Answer

Emotional flattening

Answer

Atypical symptoms

Answer

False belief

Answer

None of the above

Question 5

Which of the following is considered a Schneider's first-rank symptom?

Accepted Answer

Voices commenting on actions

Answer

Persecutory delusion

Answer

Delusion of guilt

Answer

Incoherence

Question 6

Third-person hallucinations are characteristic of which of the following conditions?

Accepted Answer

Schizophrenia

Answer

Depression

Answer

Obsession

Answer

Mania

Question 7

A 40-year-old man has recently started writing books. The content of his writing is incoherent, using neologisms and tangential themes, making it unintelligible to others. What is the likely diagnosis?

Accepted Answer

Schizophrenia

Answer

Mania

Answer

Genius writer

Answer

Delusional disorder

Question 8

Delusions in delirium are generally:

Accepted Answer

Transient

Answer

Frightening

Answer

Self-referential

Answer

Nihilistic

Question 9

A 35-year-old male with pre-morbid anxious traits and heavy smoking believes he has suffered from lung carcinoma for a year. No significant clinical findings are detected on examination, and relevant investigations are unremarkable. He continues to hold this belief despite evidence to the contrary, having spent considerable money, time, and energy on undue investigations. What is the most likely diagnosis?

Accepted Answer

Hypochondriacal disorder

Answer

Carcinoma lung

Answer

Delusional disorder

Answer

Malingering

Question 10

Which feature suggests schizophrenia rather than organic psychosis?

Accepted Answer

Third person auditory hallucination

Answer

Split personality

Answer

Visual hallucination

Answer

Altered sensorium

Psychotic Disorders — MCQs

Psychotic Disorders — MCQs

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