Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis Indian Medical PG Practice Questions and MCQs

Question 171: A prisoner, when asked about the color of the sky, answered it as pink. This symptom is characteristic of which of the following?

A. Othello syndrome
B. Ganser syndrome (Correct Answer)
C. De Clerambault syndrome
D. Ekbom's syndrome

Explanation: **Explanation:** The correct answer is **Ganser syndrome** (Option B). This condition is characterized by the production of **approximate answers** (vorbeireden), where the patient provides answers that are clearly wrong but indicate that the question was understood. For example, calling the sky "pink" or saying a cow has five legs. **Why Ganser Syndrome is Correct:** Ganser syndrome is a dissociative disorder (historically classified as a factitious disorder) most commonly observed in **prison populations** (hence the term "Prison Psychosis"). The classic triad includes: 1. **Approximate answers** (the hallmark feature). 2. Clouding of consciousness. 3. Somatic conversion symptoms or hallucinations. **Analysis of Incorrect Options:** * **A. Othello Syndrome:** Also known as pathological jealousy, it is a delusional belief that one's partner is being unfaithful. * **C. De Clerambault Syndrome:** Also known as Erotomania, it is a delusion where the patient believes that another person (usually of higher social status or a celebrity) is in love with them. * **D. Ekbom’s Syndrome:** Also known as Delusional Parasitosis, it is the fixed, false belief that one is infested with insects or parasites under the skin. **High-Yield Clinical Pearls for NEET-PG:** * **Vorbeireden:** The German term for "talking past the point" or giving approximate answers. * **Demographics:** Most common in males and forensic/prison settings. * **Differential Diagnosis:** Must be distinguished from **malingering**, where the patient consciously fakes symptoms for secondary gain (e.g., avoiding trial). In Ganser syndrome, the process is considered largely unconscious/dissociative.

Question 172: Ego's defence mechanism "Undoing" is typically seen in which of the following conditions?

A. Depression
B. Schizophrenia
C. Obsessive compulsive neurosis (Correct Answer)
D. Hysteria

Explanation: **Explanation:** **Undoing** is a primary ego defense mechanism where an individual performs a specific action or ritual to symbolically "cancel out" or reverse a previous unacceptable thought, impulse, or action. It is the psychological equivalent of "wiping the slate clean." **Why Obsessive-Compulsive Neurosis (OCD) is correct:** In OCD, undoing is the hallmark defense mechanism. Patients experience intrusive, distressing thoughts (obsessions) and perform repetitive rituals (compulsions) to neutralize the anxiety or prevent a perceived disaster. For example, a patient who has a blasphemous thought may compulsively wash their hands or repeat a prayer to "undo" the perceived sin. **Why other options are incorrect:** * **Depression:** The primary defense mechanisms are **Introjection** (turning anger inward) and **Learned Helplessness**. * **Schizophrenia:** Uses primitive/narcissistic defenses such as **Projection**, **Denial**, and **Splitting**. * **Hysteria (Conversion Disorder):** Classically associated with **Repression**, **Identification**, and **Dissociation**. The psychic conflict is converted into physical symptoms (Conversion). **High-Yield Clinical Pearls for NEET-PG:** * **Defense Mechanisms in OCD:** The triad of defenses typically seen in OCD includes **Undoing**, **Reaction Formation**, and **Isolation of Affect**. * **Reaction Formation:** Transforming an unacceptable impulse into its opposite (e.g., being excessively kind to someone you hate). * **Isolation of Affect:** Stripping the emotional component from a painful memory or thought, leaving only the cold facts. * **Key Distinction:** While *Undoing* involves an action (compulsion), *Reaction Formation* involves a change in character or attitude.

Question 173: The Halstead Reitan battery includes all of the following except:

A. Finger oscillation
B. Constructional praxis (Correct Answer)
C. Rhythm
D. Tactual performance

Explanation: The **Halstead-Reitan Neuropsychological Battery (HRNB)** is a comprehensive set of tests used to assess the location and effects of brain damage. It evaluates various cognitive and sensorimotor functions. **Explanation of the Correct Answer:** **Option B (Constructional praxis)** is the correct answer because it is **not** a subtest of the Halstead-Reitan Battery. Constructional praxis (the ability to draw or assemble 2D or 3D objects) is typically assessed using the **Luria-Nebraska Neuropsychological Battery** or specific tests like the Bender-Gestalt Test. **Explanation of Incorrect Options:** * **A. Finger oscillation (Finger Tapping Test):** A core HRNB subtest that measures motor speed and coordination by having the patient tap a lever as fast as possible with the index finger. * **C. Rhythm (Seashore Rhythm Test):** A subtest assessing auditory perception and sustained attention where the patient must differentiate between pairs of rhythmic patterns. * **D. Tactual performance:** A subtest where the patient is blindfolded and asked to place blocks into a formboard. It assesses tactile perception, motor coordination, and spatial memory. **High-Yield Facts for NEET-PG:** * **Other HRNB Subtests:** Category Test (abstract reasoning), Speech Sounds Perception Test, and Trail Making Test (Part A and B). * **Purpose:** It is primarily used to differentiate between organic brain damage and functional psychiatric disorders. * **Luria-Nebraska vs. Halstead-Reitan:** While HRNB is more quantitative and time-consuming, the Luria-Nebraska Battery is more qualitative and takes less time to administer. * **Frontal Lobe Assessment:** The Wisconsin Card Sorting Test (WCST) is the gold standard for executive function/frontal lobe assessment, often tested alongside HRNB concepts.

Question 174: Which of the following features is NOT typically seen in an organic mental disorder in a 24-year-old man?

A. Impaired memory
B. Decreased consciousness
C. Vomiting
D. Normal intelligence (Correct Answer)

Explanation: In psychiatric assessment, distinguishing between **Organic Mental Disorders** (caused by identifiable physiological or structural brain dysfunction) and **Functional Disorders** (psychiatric conditions without a clear structural cause) is crucial. ### **Explanation of the Correct Answer** **D. Normal intelligence** is the correct answer because organic mental disorders, particularly those occurring early in life or resulting from chronic brain damage, are characteristically associated with a **decline in cognitive functions**, including intelligence. In chronic organic states like dementia or intellectual disability resulting from brain injury, the IQ is typically subnormal. Conversely, functional psychiatric disorders (like Schizophrenia or Bipolar Disorder) usually maintain a baseline of "normal intelligence," even if performance is hindered by symptoms. ### **Analysis of Incorrect Options** * **A. Impaired memory:** This is a hallmark of organic brain syndromes. Amnestic syndromes and dementias specifically target the registration, retention, and recall of information. * **B. Decreased consciousness:** Fluctuating levels of consciousness (clouding of sensorium) are the pathognomonic feature of **Delirium**, a common acute organic mental disorder. * **C. Vomiting:** Organic mental disorders are often secondary to systemic illnesses or increased intracranial pressure (ICP). Physical symptoms like vomiting, seizures, or focal neurological deficits strongly point toward an organic etiology rather than a functional one. ### **NEET-PG High-Yield Pearls** * **Organic vs. Functional:** Visual hallucinations and disorientation suggest an **organic** cause; auditory hallucinations and clear sensorium suggest a **functional** cause. * **Delirium vs. Dementia:** Delirium is acute with fluctuating consciousness; Dementia is chronic with clear consciousness (until late stages). * **The "Organic" Triad:** Impairment of **Memory, Orientation, and Consciousness** usually confirms an organic diagnosis.

Question 175: Which of the following is NOT true regarding delirium?

A. Acute onset
B. Sleep disturbance
C. Myoclonus
D. Normal consciousness (Correct Answer)

Explanation: **Explanation:** Delirium (Acute Confusional State) is an etiologically non-specific organic cerebral syndrome characterized by concurrent disturbances of consciousness, attention, perception, and cognition. **Why "Normal Consciousness" is the correct answer:** The hallmark of delirium is a **clouding of consciousness** (decreased awareness of the environment) and a reduced ability to focus, sustain, or shift attention. Therefore, consciousness is never "normal" in a delirious patient; it typically fluctuates throughout the day. **Analysis of Incorrect Options:** * **A. Acute onset:** Delirium typically develops over a short period (hours to a few days) and represents an acute change from baseline. This is a key feature distinguishing it from dementia. * **B. Sleep disturbance:** Disturbance of the sleep-wake cycle is a core diagnostic criterion. Patients often experience daytime drowsiness and nighttime agitation ("sundowning"), or complete reversal of the sleep-wake cycle. * **C. Myoclonus:** Delirium is often associated with motor abnormalities. Myoclonus, asterixis (flapping tremors), and coarse tremors are common physical signs, especially in metabolic or toxic encephalopathies. **NEET-PG High-Yield Pearls:** * **EEG Finding:** Characterized by **generalized slowing** of background activity (except in Delirium Tremens, where EEG shows low-voltage fast activity). * **Visual Hallucinations:** These are the most common type of hallucinations in delirium (unlike Schizophrenia, where auditory hallucinations predominate). * **Reversibility:** Unlike dementia, delirium is usually reversible once the underlying medical cause (infection, electrolyte imbalance, drug toxicity) is treated. * **Drug of Choice:** Low-dose **Haloperidol** is the preferred antipsychotic for agitation in delirium (avoid benzodiazepines unless it is alcohol withdrawal delirium).

Question 176: In conversion disorder, which of the following is typically NOT found?

A. Jealousy (Correct Answer)
B. Paralysis
C. Anesthesia
D. Abnormal gait

Explanation: **Explanation:** **Conversion Disorder (Functional Neurological Symptom Disorder)** is characterized by the presence of one or more symptoms of altered voluntary motor or sensory function that are incompatible with recognized neurological or medical conditions. **Why Jealousy is the correct answer:** Jealousy is an **emotional state or a symptom of a delusional disorder** (e.g., Othello syndrome), not a physical manifestation of neurological dysfunction. Conversion disorder specifically involves "converting" psychological distress into **physical (somatic) symptoms** affecting the motor or sensory systems. Therefore, jealousy does not fit the diagnostic criteria for conversion disorder. **Analysis of Incorrect Options:** * **B. Paralysis:** This is a common motor symptom in conversion disorder. Patients may present with hemiplegia or monoplegia that does not follow anatomical nerve distributions. * **C. Anesthesia:** Sensory loss (anesthesia or paresthesia) is a hallmark feature. A classic example is "glove and stocking" anesthesia, which does not correspond to dermatomal patterns. * **D. Abnormal gait:** Motor coordination issues, such as **Astasia-abasia** (a wild, staggering gait where the patient rarely falls), are frequently observed. **NEET-PG High-Yield Pearls:** * **La Belle Indifférence:** A classic (though not pathognomonic) feature where the patient shows a surprising lack of concern regarding their severe disability. * **Primary Gain:** Internal conflict is kept out of awareness (anxiety is reduced). * **Secondary Gain:** External benefits are derived from being sick (e.g., attention, avoiding work). * **Identification:** The patient may unconsciously mimic the symptoms of a deceased or ill loved one. * **Treatment:** Physical therapy and Cognitive Behavioral Therapy (CBT) are first-line; pharmacotherapy is used only for comorbid anxiety or depression.

Question 177: Presently, classification of psychiatric illness is done by which system(s)?

A. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V)
B. International Classification of Diseases, 10th Revision (ICD-10)
C. Both DSM-V and ICD-10 (Correct Answer)
D. Neither DSM-V nor ICD-10

Explanation: **Explanation** Psychiatric diagnosis relies on standardized classification systems to ensure consistency in clinical practice and research. Currently, two major systems are used globally: 1. **DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition):** Published by the **American Psychiatric Association (APA)**, it is primarily used in the United States and in academic research worldwide. It provides specific diagnostic criteria and is purely focused on mental disorders. 2. **ICD-10 (International Classification of Diseases, 10th Revision):** Published by the **World Health Organization (WHO)**, it is the global standard for reporting diseases and health conditions. Chapter V (F) specifically covers Mental and Behavioral Disorders. In India, the ICD system is the official framework used for clinical coding and government records. **Analysis of Options:** * **Option A & B:** While both are correct individually, they are incomplete. Both systems coexist and are used concurrently depending on the geographical location and the purpose (clinical vs. research). * **Option C (Correct):** This is the most accurate answer as both the DSM and ICD are the recognized pillars of psychiatric classification. * **Option D:** Incorrect, as these are the only two universally accepted systems. **High-Yield Clinical Pearls for NEET-PG:** * **Latest Versions:** While ICD-10 is currently the most used in Indian clinical settings, **ICD-11** has been released by the WHO (effective Jan 2022) and is being gradually implemented. * **DSM-5-TR:** A "Text Revision" of the DSM-5 was released in 2022, providing updated descriptive text and minor criteria changes. * **Key Difference:** DSM is "multi-axial" (historically) and more detailed in criteria, whereas ICD is used for all medical conditions, not just psychiatry.

Question 178: The patient's thoughts seem to be associated more by sound and rhyme than by meaning. This phenomenon is known as:

A. Flight of ideas
B. Perseveration
C. Circumstantiality
D. Clang association (Correct Answer)

Explanation: **Explanation:** The correct answer is **Clang association**. This is a formal thought disorder where the patient’s speech is governed by the **sounds of words (phonetics)** rather than their conceptual meaning. This typically manifests as rhyming, punning, or alliteration (e.g., "I am the king, ring, wing, sing"). It is most commonly associated with the **manic phase of Bipolar Disorder** and occasionally Schizophrenia. **Analysis of Incorrect Options:** * **A. Flight of ideas:** This involves a rapid succession of thoughts where the connection between ideas is maintained but shifts quickly based on chance associations or distracting stimuli. While it can include clang associations, the term specifically refers to the *speed* and *flow* of thoughts. * **B. Perseveration:** This is the inappropriate persistence or repetition of a specific response (word, phrase, or gesture) to different questions or stimuli, even after the initial stimulus is removed. It is often a sign of organic brain disease or Catatonia. * **C. Circumstantiality:** The patient provides excessive, unnecessary detail and tedious "parenthetical" remarks before eventually reaching the point or answering the original question. **Clinical Pearls for NEET-PG:** * **Clang Association** is a hallmark of **Mania**. * **Neologism:** Coining new words that have meaning only to the patient (common in Schizophrenia). * **Word Salad (Incoherence):** A complete breakdown of syntax where words are strung together without any logical connection. * **Thought Blocking:** A sudden interruption in the train of thought before an idea is completed; pathognomonic for **Schizophrenia**.

Question 179: What degree of mitral regurgitation (MR) is indicated by an EROA of 20-34 cm²?

A. Severe MR (Correct Answer)
B. Profound MR
C. Moderate MR
D. Mild MR

Explanation: **Explanation:** The assessment of Mitral Regurgitation (MR) severity is a high-yield topic in Cardiology. The **Effective Regurgitant Orifice Area (EROA)** is a quantitative measure derived from echocardiography (PISA method) that reflects the size of the hole through which blood leaks back into the atrium. **1. Why "Severe MR" is correct:** According to the American College of Cardiology (ACC) and American Heart Association (AHA) guidelines, the threshold for **Severe Organic (Primary) MR** is an **EROA ≥ 0.40 cm²**. However, for **Secondary (Functional) MR**, the threshold for severity is lower, typically defined as **EROA ≥ 0.20 cm²**. Since the range provided (20-34 mm², which converts to 0.20-0.34 cm²) falls within the diagnostic criteria for severe functional MR, "Severe MR" is the most appropriate clinical classification. **2. Why other options are incorrect:** * **Mild MR:** Defined by an EROA < 0.20 cm². * **Moderate MR:** Typically falls between 0.20 and 0.39 cm² for primary MR. In the context of functional MR, values above 0.20 cm² are already associated with a poor prognosis and are treated as severe. * **Profound MR:** This is not a standard clinical grading term used in echocardiographic guidelines. **Clinical Pearls for NEET-PG:** * **Regurgitant Volume (RV):** Severe MR is also defined by an RV ≥ 60 mL (Primary) or ≥ 30 mL (Secondary). * **Holosystolic Murmur:** Severe MR typically presents with a high-pitched holosystolic murmur at the apex radiating to the axilla. * **S3 Gallop:** The presence of an S3 often indicates severe MR due to volume overload of the left ventricle. * **Surgical Indication:** Asymptomatic patients with severe primary MR require surgery if the Left Ventricular Ejection Fraction (LVEF) is ≤ 60% or LV End-Systolic Dimension (LVESD) is ≥ 40 mm.

Question 180: Which of the following features is not common between delirium and dementia?

A. Disturbance of memory
B. Hallucinations
C. Delusions
D. Fluctuating course (Correct Answer)

Explanation: ### Explanation The key to distinguishing between Delirium and Dementia lies in their **temporal profile** and **level of consciousness**. **Why "Fluctuating Course" is the correct answer:** While both conditions can show variations, a **fluctuating course** (specifically "sundowning" or rapid shifts in arousal and attention within hours) is a **hallmark characteristic of Delirium**. In contrast, Dementia typically presents with a **progressive, stable decline** over months to years. While dementia patients may worsen at night, the acute, hour-to-hour waxing and waning of consciousness is unique to delirium. Therefore, it is not a "common" feature shared by both. **Analysis of Incorrect Options:** * **Disturbance of Memory:** This is a core feature of both. Dementia involves chronic memory loss (usually short-term first), while Delirium involves impaired registration and recall due to inattention. * **Hallucinations:** Both can present with psychotic symptoms. In delirium, visual hallucinations are very common; in dementia (especially Lewy Body Dementia), they are also a frequent feature. * **Delusions:** Both conditions can manifest with delusions. In delirium, they are usually fragmented and persecutory; in dementia, they are often related to theft or infidelity (e.g., "Othello syndrome"). **NEET-PG High-Yield Pearls:** * **Delirium:** Acute onset, **impaired attention** (cardinal sign), reversible, and usually due to an underlying medical cause (metabolic, infectious, or drug-induced). * **Dementia:** Insidious onset, **clear consciousness** (until late stages), irreversible, and primarily a structural brain pathology. * **EEG Finding:** Delirium typically shows **generalized slowing** (except in alcohol withdrawal/DTs), whereas the EEG in early dementia is often normal.

Practice by Chapter

Clinical Interview Techniques

Practice Questions

Mental Status Examination

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Diagnostic Formulation

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Rating Scales and Questionnaires

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Psychological Testing

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Neuropsychological Assessment

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Risk Assessment

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Laboratory Investigations in Psychiatry

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Neuroimaging in Clinical Assessment

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Cultural Considerations in Assessment

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Developmental Assessment

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Diagnostic Classification Systems

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