Psychiatric Assessment and Diagnosis Practice Questions

Q: A 8-year-old child, after a tonsillectomy, sees a bear in her room and screams in fright. A nurse who rushes in switches on the light and finds a rug wrapped around an armchair. What did the child experience?

Illusion. **Explanation:** The child experienced an **Illusion**, which is defined as a **misinterpretation of a real external sensory stimulus**. In this scenario, there was an actual object present (a rug wrapped around an armchair), but the child’s brain incorrectly perceived it as a "bear." Illusions are common in children, especially in states of heightened emotion (fear) or reduced lighting, and are frequently seen in clinical conditions like Delirium. **Analysis of Options:** * **B. Illusion (Correct):** There is a stimulus (rug/chair) + False perception (bear). * **A. Delusion:** This is a disorder of **thought content**, defined as a fixed, false belief that is out of keeping with the patient’s social and cultural background. It is not a sensory perception. * **C. Hallucination:** This is a **perception in the absence of an external stimulus**. If the child saw a bear in an empty room where no object existed to trigger the image, it would be a hallucination. **NEET-PG High-Yield Pearls:** 1. **Illusion vs. Hallucination:** The presence of an external stimulus is the "litmus test." Stimulus present = Illusion; Stimulus absent = Hallucination. 2. **Pareidolia:** A type of illusion where vague stimuli (like clouds or patterns) are perceived as significant forms (faces). Unlike ordinary illusions, these do not disappear when the person focuses on them. 3. **Clinical Context:** Illusions and visual hallucinations are hallmark features of **Delirium** (Organic Brain Syndrome). Post-operative states in children are high-risk periods for transient delirious episodes.

Q: All of the following are impulse control disorders except?

Capgras syndrome. **Explanation:** The core concept of **Impulse Control Disorders (ICDs)** is the failure to resist an impulse, drive, or temptation to perform an act that is harmful to the person or others. Patients typically experience an increasing sense of tension before the act and relief or gratification during the act. **Why Capgras Syndrome is the correct answer:** Capgras syndrome is a **delusional misidentification syndrome**, not an impulse control disorder. It is characterized by the delusional belief that a spouse, relative, or friend has been replaced by an identical-looking impostor. It is most commonly seen in schizophrenia, dementia, or brain injury. **Analysis of Incorrect Options:** * **Pyromania (Option A):** A classic ICD characterized by deliberate and purposeful fire-setting on more than one occasion, driven by a fascination with fire and tension release. * **Trichotillomania (Option B):** Now classified under "Obsessive-Compulsive and Related Disorders" in DSM-5, it was traditionally categorized as an ICD. It involves the recurrent pulling out of one's hair, leading to hair loss and significant distress. * **Kleptomania (Option C):** An ICD involving the recurrent failure to resist impulses to steal objects that are not needed for personal use or monetary value. **High-Yield Clinical Pearls for NEET-PG:** * **Fregoli Syndrome:** The opposite of Capgras; the belief that different people are actually a single person in disguise. * **Cotard Syndrome:** The "walking corpse" delusion; the belief that one is dead, decaying, or has lost internal organs. * **Intermittent Explosive Disorder (IED):** Another high-yield ICD involving discrete episodes of failure to resist aggressive impulses resulting in serious assaults or destruction of property. * **Pathological Gambling:** Also classified as an addictive/impulse control disorder.

Q: Delusion is a disorder of:

Thinking. **Explanation:** **1. Why "Thinking" is Correct:** Delusion is defined as a **false, fixed belief** that is out of keeping with the patient’s social, cultural, and educational background, and cannot be corrected by logical reasoning. In psychiatry, thinking is categorized into four domains: Form, Stream, Possession, and **Content**. Delusions are the hallmark disorder of the **Content of Thought**. The patient’s thought process produces an incorrect inference about external reality that is firmly held. **2. Why Other Options are Incorrect:** * **Memory:** Disorders of memory include **Amnesia** (loss of memory) or **Paramnesia** (distortions of memory like *Déjà vu* or *Confabulation*). * **Perception:** Disorders of perception involve sensory experiences without external stimuli (**Hallucinations**) or misinterpretations of real external stimuli (**Illusions**). While delusions and hallucinations often co-occur (e.g., in Schizophrenia), they represent different psychopathological domains. * **Learning:** Disorders of learning (e.g., Dyslexia) are cognitive or developmental impairments and do not involve the formation of false belief systems. **3. NEET-PG High-Yield Pearls:** * **Primary Delusion (Autochthonous):** Arises suddenly "out of the blue" without a preceding mental event. * **Secondary Delusion:** Develops as a consequence of other psychopathology (e.g., a depressed patient developing delusions of poverty). * **Overvalued Idea:** A solitary, abnormal belief that is not as fixed as a delusion and is not necessarily false, but dominates the patient's life (e.g., Anorexia Nervosa or Hypochondriasis). * **Monothematic Delusion:** A delusion centered on a single theme (e.g., Othello Syndrome/Morbid Jealousy).

Q: Which of the following best describes hallucinations?

A perception occurring without external stimulation. ### Explanation **Correct Answer: D. A perception occurring without external stimulation** **Hallucinations** are defined as sensory perceptions that occur in the **absence of an external stimulus**. They are experienced as true perceptions, originating in external space rather than within the mind (unlike imagery), and are not under voluntary control. In psychiatry, they are a hallmark of psychosis, with auditory hallucinations being the most common type in Schizophrenia. #### Analysis of Incorrect Options: * **Option A (Feeling of familiarity with an unfamiliar thing):** This describes **Déjà vu**, a phenomenon of recognition memory. Its opposite (feeling unfamiliar with a known thing) is *Jamais vu*. * **Option B (Alteration in the perception of one's reality):** This refers to **Derealization** (feeling that the world is unreal) or **Depersonalization** (feeling detached from oneself). These are dissociative symptoms, not hallucinations. * **Option C (Misinterpretation of existing stimuli):** This is the definition of an **Illusion**. In an illusion, a real external stimulus is present but perceived incorrectly (e.g., mistaking a rope for a snake in the dark). #### NEET-PG Clinical Pearls: * **Hypnagogic vs. Hypnopompic:** Hallucinations occurring while falling asleep (Hypna**go**gic = **Go**ing to sleep) vs. waking up (Hypno**pom**pic = **Po**pping out of bed). Both can be normal but are associated with Narcolepsy. * **Charles Bonnet Syndrome:** Visual hallucinations in elderly patients with significant visual impairment (intact cognition). * **Formication:** The tactile hallucination of insects crawling under the skin, commonly seen in Cocaine withdrawal ("Cocaine bugs") or Delirium Tremens. * **Functional Hallucination:** A hallucination triggered by a real stimulus in the same sensory modality (e.g., hearing voices only when the tap is running).

Q: A person falsely perceives that his close friend has been replaced by an exact double. This phenomenon is referred to as?

Capgras syndrome. ### Explanation **Correct Answer: C. Capgras syndrome** **Capgras syndrome** is a delusional misidentification syndrome (DMS) characterized by the belief that a person close to the patient (usually a spouse or family member) has been replaced by an identical-looking impostor or double. It is often associated with schizophrenia, dementia, or brain injury. The core pathology involves a disconnection between the visual recognition system and the emotional response system; the patient recognizes the face but lacks the "emotional glow" of familiarity, leading to the delusion of an impostor. **Analysis of Incorrect Options:** * **A. Cotard syndrome:** Also known as "Walking Corpse Syndrome," the patient believes they are dead, non-existent, or that their internal organs are rotting/missing. * **B. Fregoli syndrome:** The opposite of Capgras. The patient believes that different people are actually a single person in disguise who is following or persecuting them. * **D. Delusional perception:** A primary delusion where a normal, real perception is suddenly given a delusional meaning (e.g., "The traffic light turned red, so I knew the aliens were landing"). **High-Yield Clinical Pearls for NEET-PG:** * **Capgras vs. Fregoli:** Remember **C**apgras = **C**lone (thinks someone is a clone/impostor). **F**regoli = **F**ace (thinks one face is behind many people). * **Intermetamorphosis:** A related DMS where the patient believes people have swapped identities with each other both physically and psychologically. * **Reduplicative Paramnesia:** The belief that a physical location has been duplicated or moved (e.g., believing there are two identical hospitals). * **Legal Significance:** These syndromes are important in Forensic Psychiatry as they can lead to violence against the "impostor," raising questions of criminal responsibility and the **McNaughten Rules**.

Q: Confabulation is a defect of?

Memory. **Explanation:** **Confabulation** is a clinical phenomenon characterized by the creation of false or fabricated memories without the conscious intention to deceive. It is fundamentally a **defect of memory**, specifically occurring when a patient attempts to fill in gaps (lacunae) in their memory with imaginary experiences or distorted facts. * **Why Memory is Correct:** In conditions like **Wernicke-Korsakoff Syndrome**, patients suffer from severe anterograde and retrograde amnesia. To maintain a sense of continuity and self, the brain "fills the gaps" with plausible but false information. The patient typically believes these fabrications to be true (lack of insight). **Analysis of Incorrect Options:** * **Intelligence:** This refers to the global capacity to act purposefully and think rationally. While dementia involves a decline in intelligence, confabulation specifically addresses the memory deficit within that decline. * **Attention:** This is the ability to focus on a specific stimulus. Defects in attention are hallmark features of Delirium, not the primary cause of confabulation. * **Concentration:** This is the ability to sustain attention over time. While often impaired in psychiatric disorders (like Depression or ADHD), it does not result in the fabrication of memories. **Clinical Pearls for NEET-PG:** * **Korsakoff’s Psychosis:** Confabulation is a hallmark "pathognomonic" sign of this condition, caused by **Thiamine (Vitamin B1) deficiency**, often due to chronic alcoholism. * **Mechanism:** It involves damage to the **mammillary bodies** and the dorsomedial nucleus of the thalamus. * **Types:** Confabulation can be "embarrassed" (momentary, provoked by questions) or "fantastic" (grandiose, spontaneous). * **Differentiating Point:** Unlike lying (malingering), the patient is not aware that the information is false.

Q: Astasia-abasia is typically seen in which of the following conditions?

Hysterical conversion disorder. **Explanation:** **Astasia-abasia** is a psychogenic gait disturbance characterized by the inability to stand (**astasia**) or walk (**abasia**) in a normal manner, despite having intact motor strength, sensation, and coordination when tested in a supine position. 1. **Why Option D is Correct:** Astasia-abasia is a classic manifestation of **Conversion Disorder** (Functional Neurological Symptom Disorder). The patient typically displays a dramatic, staggering, or "wild" gait, often swaying violently without actually falling, or falling only when a bystander is there to catch them. This "bizarre" presentation lacks an anatomical or physiological basis and is often associated with *la belle indifférence* (a lack of concern regarding the disability). 2. **Why Other Options are Incorrect:** * **A. Parkinsonism:** Characterized by a "shuffling gait," festination, and postural instability due to basal ganglia dysfunction, not psychogenic factors. * **B. Alzheimer’s Disease:** While late-stage patients may develop gait apraxia, the primary pathology is cognitive decline and cortical atrophy. * **C. Schizophrenia:** Patients may exhibit catatonic posturing or stereotypies, but astasia-abasia is not a diagnostic feature of this psychotic disorder. **NEET-PG High-Yield Pearls:** * **Conversion Disorder (ICD-11: Dissociative Neurological Symptom Disorder):** Symptoms are not intentionally produced (unlike Malingering or Factitious Disorder) and are often triggered by psychological stress. * **Gait Characteristics:** In astasia-abasia, the patient often uses "economical" movements to maintain balance, which paradoxically requires more core strength than normal walking. * **Key Differential:** Always rule out midline cerebellar tumors, which can also cause truncal ataxia, though the presentation is rarely as "theatrical" as in conversion.

Q: Events occurring in the past one week are an example of which type of memory?

Recent memory. ### Explanation Memory is clinically categorized based on the duration and nature of information retention. In a Mental Status Examination (MSE), assessing these subtypes helps localize brain pathology and differentiate between various psychiatric and neurological disorders. **Why the Correct Answer is Right:** * **Recent Memory (Option A):** This refers to the ability to recall information and events from the past few hours to a few days or weeks (typically up to the last **2–4 weeks**). Asking a patient about what they ate for breakfast, recent news events, or activities over the **past week** specifically tests recent memory. This is often impaired in early stages of dementia and Korsakoff’s psychosis. **Why the Incorrect Options are Wrong:** * **Remote Memory (Option B):** This involves the recall of events from the distant past (years ago), such as childhood details or historical dates. It is usually preserved until the late stages of cognitive decline (Ribot’s Law). * **Working Memory (Option C):** A component of immediate memory, it involves holding and manipulating information for a very short period (seconds). It is typically tested using the "Digit Span" or "Serial 7s" tasks. * **Delayed Memory (Option D):** This is a subset of recent memory where a patient is asked to recall specific items (e.g., three words) after a short interval of 5 to 10 minutes. **Clinical Pearls for NEET-PG:** * **Immediate Memory:** Recall within seconds (Tested by Digit Span). * **Anterograde Amnesia:** Inability to form new memories (Recent memory loss). * **Retrograde Amnesia:** Loss of memories formed before a brain injury (Remote memory loss). * **Confabulation:** Filling memory gaps with fabricated stories, classically seen in **Wernicke-Korsakoff Syndrome** due to Thiamine (B1) deficiency. * **Brain Region:** The **Hippocampus** and temporal lobes are critical for converting short-term to long-term (recent) memory.

Q: Clang associations are seen in which of the following conditions?

Mania. **Explanation:** **Clang association** is a formal thought disorder where the connection between ideas is governed by the **sounds of words** (rhyming or punning) rather than their logical meanings. 1. **Why Mania is correct:** In **Mania**, patients experience "Flight of Ideas," where thoughts move rapidly from one topic to another. As the pressure of speech increases, the logical links between thoughts break down and are replaced by phonetic associations. Clang associations are a classic feature of the manic phase of Bipolar Disorder, reflecting the patient's heightened energy and distractibility. 2. **Why other options are incorrect:** * **Depression:** Characterized by "Poverty of Thought" and psychomotor retardation. Speech is typically slow, sparse, and focused on themes of guilt or hopelessness, rather than playful rhyming. * **Schizophrenia:** While Schizophrenia involves formal thought disorders like "Word Salad" or "Loosening of Associations," Clang associations are more characteristically associated with the pressured speech of Mania. However, they can occasionally occur in disorganized schizophrenia. * **Phobia:** This is an anxiety disorder characterized by irrational fear. It does not involve a primary disorder of thought form or speech patterns. **NEET-PG High-Yield Pearls:** * **Flight of Ideas:** Rapid shifting of ideas with a thin thread of connection (seen in Mania). * **Knight’s Move Thinking (Loosening of Associations):** Lack of any logical connection between ideas (Pathognomonic for Schizophrenia). * **Word Salad (Schizophasia):** A mixture of random words and phrases (Severe Schizophrenia). * **Neologism:** Coining new words that have meaning only to the patient (Common in Schizophrenia).

Question 1

The reliability of information provided by informants about a patient depends on all of the following factors except:

Accepted Answer

Educational status of the informant

Answer

Biological relationship with the patient

Answer

Consistency of the information provided

Answer

Duration of stay with the patient

Question 2

A 8-year-old child, after a tonsillectomy, sees a bear in her room and screams in fright. A nurse who rushes in switches on the light and finds a rug wrapped around an armchair. What did the child experience?

Accepted Answer

Illusion

Answer

Delusion

Answer

Hallucination

Answer

None of the above

Question 3

All of the following are impulse control disorders except?

Accepted Answer

Capgras syndrome

Answer

Pyromania

Answer

Trichotillomania

Answer

Kleptomania

Question 4

Delusion is a disorder of:

Accepted Answer

Thinking

Answer

Memory

Answer

Perception

Answer

Learning

Question 5

Which of the following best describes hallucinations?

Accepted Answer

A perception occurring without external stimulation

Answer

A feeling of familiarity with an unfamiliar thing

Answer

An alteration in the perception of one's reality

Answer

A misinterpretation of existing stimuli

Question 6

A person falsely perceives that his close friend has been replaced by an exact double. This phenomenon is referred to as?

Accepted Answer

Capgras syndrome

Answer

Cotard syndrome

Answer

Fregoli syndrome

Answer

Delusional perception

Question 7

Confabulation is a defect of?

Accepted Answer

Memory

Answer

Intelligence

Answer

Attention

Answer

Concentration

Question 8

Astasia-abasia is typically seen in which of the following conditions?

Accepted Answer

Hysterical conversion disorder

Answer

Parkinsonism

Answer

Alzheimer's disease

Answer

Schizophrenia

Question 9

Events occurring in the past one week are an example of which type of memory?

Accepted Answer

Recent memory

Answer

Remote memory

Answer

Working memory

Answer

Delayed memory

Question 10

Clang associations are seen in which of the following conditions?

Accepted Answer

Mania

Answer

Depression

Answer

Schizophrenia

Answer

Phobia

Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis — MCQs

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