Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis Indian Medical PG Practice Questions and MCQs

Question 41: Mutism and akinesis in a person who appears awake and alert is best described as?

A. Twilight State
B. Oneiroid State
C. Stupor (Correct Answer)
D. Delirium

Explanation: ### Explanation **Correct Option: C. Stupor** In psychiatry and neurology, **Stupor** is defined as a state of **akinesis** (lack of physical movement) and **mutism** (lack of speech) in a patient who appears to be awake (eyes are open and follow objects). Although the patient is conscious, there is a profound lack of responsiveness to the external environment. Stupor is a hallmark feature of **Catatonic Schizophrenia**, but it can also occur in organic brain disorders or severe depression (Melancholic/Stuporous depression). **Why Incorrect Options are Wrong:** * **A. Twilight State:** This is a condition of "clouding of consciousness" where the patient is disconnected from the environment and may perform complex, often purposeless or violent acts without subsequent memory. It is typically seen in epilepsy (post-ictal) or hysteria. * **B. Oneiroid State:** Derived from the Greek word *oneiros* (dream), this is a dream-like state of consciousness where the patient experiences vivid hallucinations and imagery while remaining awake. It is often associated with acute schizophrenia. * **D. Delirium:** This is an acute organic brain syndrome characterized by a global impairment of cognitive functions, fluctuating levels of consciousness, and **disorientation**. Unlike stupor, delirium usually involves psychomotor agitation or retardation and autonomic instability. **High-Yield Clinical Pearls for NEET-PG:** * **Catatonic Stupor:** The most common cause of stupor in young adults. Look for "Waxy Flexibility" (Cerea Flexibilitas) in the clinical vignette. * **Management:** The drug of choice for immediate relief of catatonic stupor is **Lorazepam** (the "Lorazepam Challenge Test"). If pharmacological treatment fails, **Electroconvulsive Therapy (ECT)** is highly effective. * **Differentiation:** Unlike a coma, a patient in a stupor has their eyes open and can maintain postural tone.

Question 42: Perceptual misinterpretation of a real object is:

A. Hallucination
B. Schizophrenia
C. Illusion (Correct Answer)
D. Delusion

Explanation: **Explanation:** The correct answer is **Illusion**. In psychiatry, an illusion is defined as a **misinterpretation of a real external sensory stimulus**. For example, a patient seeing a rope in a dark room and perceiving it as a snake. The key feature here is that an actual object exists in the environment, but the brain processes it incorrectly. **Analysis of Incorrect Options:** * **A. Hallucination:** This is a sensory perception in the **absence** of any external stimulus (e.g., hearing voices when no one is speaking). Unlike illusions, hallucinations occur without a real object. * **B. Schizophrenia:** This is a complex clinical **syndrome/disorder** characterized by a range of symptoms including delusions, hallucinations, and disorganized thinking. It is not a specific perceptual term. * **D. 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 and is held with absolute conviction despite evidence to the contrary. **High-Yield Clinical Pearls for NEET-PG:** * **Pareidolia:** A type of illusion where vague stimuli (like clouds or patterns on a wall) are perceived as significant images (like faces). * **Hypnagogic vs. Hypnopompic:** Hallucinations occurring while falling asleep (Hypna**g**ogic = **G**o to sleep) vs. while waking up (Hypno**p**ompic = **P**op out of bed). * **Formication:** A specific tactile hallucination (feeling of insects crawling on skin) commonly seen in Cocaine withdrawal and Delirium Tremens. * **Elementary Hallucinations:** Simple flashes of light or bangs (common in organic brain disease), whereas **Complex Hallucinations** involve formed faces or voices (common in functional psychoses).

Question 43: A component of conversion disorder is

A. Hysterical fits (Correct Answer)
B. Derealization
C. Depersonalization
D. Amnesia

Explanation: **Explanation:** **Conversion Disorder (Functional Neurological Symptom Disorder)** is characterized by the presence of neurological symptoms (motor or sensory) that cannot be explained by a known neurological or medical condition. The core concept is the "conversion" of psychological distress into physical symptoms. **Why "Hysterical Fits" is correct:** Historically, Conversion Disorder was termed "Hysteria." **Hysterical fits** (now more accurately called **Psychogenic Non-Epileptic Seizures or PNES**) are a classic presentation of conversion disorder. These episodes mimic generalized tonic-clonic seizures but lack the characteristic EEG changes, post-ictal confusion, or tongue biting seen in true epilepsy. They are involuntary and often triggered by psychological stressors. **Analysis of Incorrect Options:** * **B. Derealization & C. Depersonalization:** These are components of **Dissociative Disorders** (specifically Depersonalization-Derealization Disorder). While conversion and dissociation are related (both involve a "split" from reality or body function), these specific symptoms involve an altered perception of the self or the environment, not a loss of motor/sensory function. * **D. Amnesia:** This is the hallmark of **Dissociative Amnesia**. While it can co-occur with conversion symptoms, it is classified as a dissociative disorder involving memory loss, rather than a physical neurological deficit. **NEET-PG Clinical Pearls:** * **La Belle Indifférence:** A classic (though not universal) sign where the patient shows a surprising lack of concern regarding their severe physical disability. * **Primary Gain:** Internal relief from anxiety by keeping a psychological conflict out of conscious awareness. * **Secondary Gain:** External benefits derived from the "sick role" (e.g., attention, avoiding work). * **Hoover’s Sign:** A clinical test used to differentiate conversion-related leg weakness from organic causes.

Question 44: Ribot's law deals with which of the following?

A. Dementia
B. Delirium
C. Retrograde amnesia (Correct Answer)
D. Anterograde amnesia

Explanation: **Explanation:** **Ribot’s Law** (also known as the Law of Regression) states that in cases of organic memory loss, there is a specific chronological order to the dissolution of memory. It posits that **recent memories are lost first, while remote (older) memories are better preserved.** 1. **Why Retrograde Amnesia is Correct:** Ribot’s Law specifically describes the pattern of **Retrograde Amnesia**. It suggests that memories undergo a process of "consolidation" over time. Older memories are more stable and resistant to brain injury or decay because they have been more firmly ingrained in the neural architecture. Therefore, in conditions like head trauma or early neurodegeneration, a patient may forget events leading up to the injury (recent) but vividly remember their childhood (remote). 2. **Why Other Options are Incorrect:** * **Anterograde Amnesia:** This refers to the inability to form *new* memories after an inciting event. Ribot’s Law focuses on the gradient of loss for *pre-existing* memories. * **Dementia:** While Ribot’s Law is clinically observed in dementia (e.g., Alzheimer’s, where recent memory fails first), the law itself is a principle of memory dissolution, not a diagnosis. * **Delirium:** This is an acute disturbance of consciousness and attention, not primarily a disorder of graded memory loss. **High-Yield Clinical Pearls for NEET-PG:** * **Jost’s Law:** States that if two memories are of equal strength, the older one will decay more slowly. * **Wernicke-Korsakoff Syndrome:** Characterized by profound anterograde amnesia and retrograde amnesia (often following Ribot’s Law), typically associated with thiamine deficiency. * **Memory Consolidation:** The hippocampus is essential for forming new memories, but over time, memories are transferred to the neocortex for long-term storage (explaining why remote memories survive hippocampal damage).

Question 45: Displacement reaction is characteristically seen in:

A. Mania
B. Phobia (Correct Answer)
C. Conversion disorder
D. Depression

Explanation: **Explanation:** **Displacement** is a defense mechanism where an individual redirects an emotional impulse (usually aggression or anxiety) from its original, threatening source to a less threatening target. **Why Phobia is Correct:** In phobic disorders, displacement is the primary defense mechanism. According to psychoanalytic theory (notably Freud’s case of "Little Hans"), anxiety arising from an internal unconscious conflict is **displaced** onto an external object or situation (the phobic stimulus). By displacing the internal fear onto something external, the individual can avoid the anxiety by simply avoiding that specific object or situation. **Analysis of Incorrect Options:** * **Mania:** Characterized by the use of **Denial** (denying the existence of problems or pain) and **Reaction Formation**. * **Conversion Disorder:** Characterized by **Repression** and **Symbolization**. The psychological conflict is converted into a physical symptom (somatization) rather than being displaced onto another object. * **Depression:** Primarily involves **Introjection** (turning anger inward against the self) and **Learned Helplessness**. **NEET-PG High-Yield Pearls:** * **Phobia Defense Mechanisms:** Displacement (primary) and Avoidance (secondary). * **Obsessive-Compulsive Disorder (OCD):** Characterized by Undoing, Isolation of Affect, and Reaction Formation. * **Paranoia/Psychosis:** Characterized by **Projection** (attributing one's own unacceptable thoughts to others). * **Reaction Formation:** Transforming an unacceptable impulse into its opposite (e.g., being excessively kind to someone you hate). This is classically seen in OCD and sometimes Mania.

Question 46: Kleptomania means:

A. Irresistible desire to steal things (Correct Answer)
B. Irresistible desire to drink
C. Irresistible desire to dress like the opposite sex
D. Irresistible desire to set fire to things

Explanation: **Explanation:** **Kleptomania** is classified under **Impulse Control Disorders** in DSM-5 and ICD-10/11. It is characterized by a recurrent failure to resist impulses to steal objects that are not needed for personal use or for their monetary value. The individual experiences a rising sense of tension before the act and a sense of gratification, pleasure, or relief during or immediately after the theft. Unlike shoplifting, the act is not motivated by anger, vengeance, or financial gain. **Analysis of Options:** * **Option A (Correct):** This describes the core feature of Kleptomania. The "irresistible desire" reflects the loss of impulse control. * **Option B (Incorrect):** An irresistible desire to drink alcohol is termed **Dipsomania** (an older term for episodic binge drinking) or simply Alcohol Use Disorder. * **Option C (Incorrect):** The desire to dress like the opposite sex is known as **Transvestism** (Transvestic Disorder). If done for sexual arousal, it is a paraphilic disorder. * **Option D (Incorrect):** An irresistible desire to set fire to things is called **Pyromania**, another impulse control disorder. **Clinical Pearls for NEET-PG:** * **Gender Ratio:** Kleptomania is more common in **females** (3:1 ratio). * **Comorbidity:** High association with Mood disorders (Depression), Anxiety disorders, and Eating disorders (especially Bulimia Nervosa). * **Treatment:** The mainstay of treatment is **Cognitive Behavioral Therapy (CBT)**, specifically habit reversal training. Pharmacotherapy includes **SSRIs** (like Fluoxetine) or Opioid antagonists (like **Naltrexone**) to reduce the "urge." * **Legal Aspect:** In forensic psychiatry, Kleptomania is rarely accepted as a successful "insanity defense" because the individual usually knows the act is wrong but cannot resist the impulse.

Question 47: In which of the following conditions is the sensory loss clearly demarcated by the midline?

A. Conversion disorder (Correct Answer)
B. Charcot's neuropathy
C. Peripheral neuritis
D. Leprosy

Explanation: **Explanation:** The correct answer is **Conversion Disorder** (now referred to as Functional Neurological Symptom Disorder in DSM-5). **Why Conversion Disorder is correct:** In conversion disorder, patients present with neurological symptoms (like sensory loss or paralysis) that cannot be explained by neurological or medical conditions. The sensory loss often follows a **non-anatomical distribution** that reflects the patient’s conceptual idea of their body rather than actual nerve pathways. A classic sign is **"splitting the midline,"** where sensory loss ends abruptly at the exact midline of the body. In organic neurological conditions, sensory fibers overlap across the midline by 1–2 cm; therefore, a sharp, precise demarcation at the midline is a hallmark of a psychogenic origin. **Why the other options are incorrect:** * **Peripheral Neuritis & Charcot’s Neuropathy:** These involve organic damage to peripheral nerves. Sensory loss typically follows a "glove and stocking" distribution or specific dermatomes/nerve territories. They do not respect the midline in a sharp, linear fashion. * **Leprosy:** This involves patchy anesthesia due to the involvement of specific cutaneous nerves or trunks. The distribution is asymmetrical and corresponds to the location of skin lesions or specific nerve enlargements. **Clinical Pearls for NEET-PG:** * **La Belle Indifference:** A classic (though not universal) feature where the patient shows a surprising lack of concern regarding their severe disability. * **Hoover’s Sign:** Used to differentiate conversion paralysis from organic weakness; involuntary extension of the "paralyzed" leg when the patient flexes the contralateral hip against resistance. * **Common Presentations:** Blindness (amaurosis), aphonia, seizures (pseudoseizures), and globus hystericus. * **Primary Gain:** Internal conflict resolution (e.g., anxiety reduction). * **Secondary Gain:** External benefits (e.g., avoiding work or gaining attention).

Question 48: Which of the following features best distinguishes Delirium from Dementia?

A. Fluctuating course
B. Hypoactive psychomotor activity
C. Difficulty in finding words (Correct Answer)
D. Poor memory

Explanation: ### Explanation The core distinction between Delirium and Dementia lies in the **acuteness of onset** and the **nature of cognitive impairment**. **Why "Difficulty in finding words" is the correct answer:** While both conditions involve cognitive deficits, **Dementia** (specifically Alzheimer’s) is characterized by early and prominent **aphasia** (difficulty in finding words or naming objects). In contrast, the speech in **Delirium** is typically disorganized, incoherent, or slurred rather than a specific word-finding deficit. In the context of standard psychiatric assessments (like the MMSE), persistent word-finding difficulty is a hallmark of the cortical degeneration seen in Dementia. **Analysis of Incorrect Options:** * **A. Fluctuating course:** While often associated with Delirium (sundowning), a fluctuating course is also a classic feature of **Lewy Body Dementia**. Therefore, it is not the *best* pathognomonic differentiator between the two broad categories. * **B. Hypoactive psychomotor activity:** This can be seen in both. Delirium has a "hypoactive subtype" (often missed), and advanced Dementia leads to significant psychomotor slowing. * **D. Poor memory:** This is a common feature of both conditions. Delirium involves impaired immediate and short-term memory due to inattention, while Dementia involves progressive short-term and eventually long-term memory loss. **NEET-PG High-Yield Pearls:** * **Delirium:** Acute onset, **impaired consciousness/attention**, reversible, usually due to an underlying medical condition (e.g., UTI, electrolyte imbalance). * **Dementia:** Insidious onset, **clear consciousness**, progressive, and irreversible. * **EEG Findings:** Delirium typically shows **generalized slowing** (except in Alcohol Withdrawal/Delirium Tremens, which shows fast activity). Dementia usually has a normal EEG in early stages. * **Visual Hallucinations:** More common in Delirium and Lewy Body Dementia.

Question 49: What is the term for a sexual perversion involving a desire to watch others, including one's spouse, engage in sexual activity?

A. Sadism
B. Exhibitionism
C. Voyeurism (Correct Answer)
D. Fetishism

Explanation: **Explanation:** The correct answer is **C. Voyeurism**. **Voyeurism** is a paraphilic disorder characterized by achieving sexual arousal from observing unsuspecting individuals who are naked, disrobing, or engaging in sexual activity. A specific subtype mentioned in the question is **Troilism**, where an individual derives pleasure from watching their own partner or spouse engage in sexual intercourse with a third person. **Analysis of Incorrect Options:** * **A. Sadism:** This involves deriving sexual excitement from inflicting physical or psychological suffering, pain, or humiliation on another person. * **B. Exhibitionism:** This is the opposite of voyeurism; it involves the urge or act of exposing one's genitals to an unsuspecting stranger to achieve sexual excitement. * **D. Fetishism:** This involves the use of non-living objects (e.g., shoes, undergarments) or a highly specific focus on non-genital body parts to achieve sexual arousal. **Clinical Pearls for NEET-PG:** * **Diagnosis:** According to DSM-5, these behaviors must persist for at least **6 months** and cause significant clinical distress or impairment to be classified as a Paraphilic Disorder. * **Frotteurism:** Another high-yield term; it involves touching or rubbing against a non-consenting person in crowded places. * **Masochism:** The sexual urge to be humiliated, beaten, bound, or otherwise made to suffer. * **Treatment:** The primary treatment modality is **Cognitive Behavioral Therapy (CBT)**, often combined with SSRIs or anti-androgens to reduce compulsive sexual urges.

Question 50: A high school teacher is respected and loved by both his students and his colleagues because he easily diffuses tense moments with an appropriate light remark and he always seems to be able to find something funny in any situation. Which defense mechanism is he using?

A. Displacement
B. Humor (Correct Answer)
C. Reaction formation
D. Regression

Explanation: ### Explanation **Correct Answer: B. Humor** The teacher in this scenario is utilizing **Humor**, which is classified as a **Mature Defense Mechanism**. Mature defense mechanisms are healthy, adaptive ways of dealing with anxiety or conflict. Humor involves emphasizing the amusing or ironic aspects of a stressful situation. By finding something "funny" in tense moments, the individual reduces personal anxiety and facilitates social cohesion without distorting reality or causing discomfort to others. **Analysis of Incorrect Options:** * **A. Displacement (Neurotic):** This involves shifting an impulse or feeling (usually anger) from a threatening target to a safer, neutral substitute (e.g., a man yelled at by his boss goes home and kicks his dog). The teacher is not redirecting negative emotions toward others. * **C. Reaction Formation (Neurotic):** This involves transforming an unacceptable impulse into its polar opposite (e.g., being excessively kind to someone you secretly despise). The teacher’s humor is a genuine expression of perspective, not a mask for a contrary emotion. * **D. Regression (Immature):** This is a retreat to an earlier stage of development to avoid the stress of the current situation (e.g., a toilet-trained child starts wetting the bed when a new sibling is born). **High-Yield Clinical Pearls for NEET-PG:** * **Vaillant’s Classification:** Defense mechanisms are categorized into four levels: 1. **Pathological/Narcissistic:** Denial, Distortion, Projection. 2. **Immature:** Acting out, Regression, Somatization, Passive-aggression. 3. **Neurotic:** Displacement, Reaction Formation, Repression, Intellectualization. 4. **Mature:** **SASH** (mnemonic) – **S**ublimation, **A**ltruism, **S**uppression, **H**umor. * **Key Distinction:** Unlike *Suppression* (a conscious decision to delay paying attention to a stressor), *Humor* allows for the immediate expression of the stressor in a socially acceptable, light-hearted manner.

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Clinical Interview Techniques

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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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