Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis Indian Medical PG Practice Questions and MCQs

Question 201: A false belief, unexplained by reality and shared by a number of people, is termed as what?

A. Illusion
B. Delusion
C. Obsession
D. Mass hysteria (Correct Answer)

Explanation: **Explanation:** The correct answer is **Mass Hysteria** (also known as Epidemic Hysteria or Mass Psychogenic Illness). **1. Why Mass Hysteria is correct:** Mass hysteria refers to the rapid spread of illness signs and symptoms affecting a group of people, originating from a shared nervous system disturbance. The key feature in this question is the **shared nature** of the false belief. Unlike a typical delusion which is idiosyncratic (private to the individual), mass hysteria involves a collective "group-think" where a false belief or perceived threat is accepted and acted upon by multiple people simultaneously, often triggered by stress or anxiety. **2. Why the other options are incorrect:** * **Illusion (A):** This is a misinterpretation of a real external sensory stimulus (e.g., mistaking a rope for a snake). It is a disorder of perception, not belief. * **Delusion (B):** While a delusion is a fixed false belief, it is defined as being **not shared** by others of the same common cultural or social background. If a belief is shared by a large group, it is generally excluded from the definition of a clinical delusion. * **Obsession (C):** These are recurrent, persistent, and intrusive thoughts, images, or urges that the individual recognizes as their own but finds distressing. They are not "beliefs" accepted as reality. **Clinical Pearls for NEET-PG:** * **Folie à deux (Shared Psychotic Disorder):** A delusion shared by only two people (usually closely related). If it involves more, it is *Folie à plusieurs*. * **Delusion Definition:** Fixed, false belief, not amenable to change in light of conflicting evidence, and **not consistent** with the patient’s educational, cultural, and social background. * **Mass Hysteria** often presents with physical symptoms (fainting, tremors) without an organic cause in a school or workplace setting.

Question 202: All of the following are true about delirium except?

A. It is the most common organic brain disorder.
B. Generalized slowing of waves are seen in EEG.
C. Auditory hallucinations are more commonly present. (Correct Answer)
D. Sundowning phenomenon is seen.

Explanation: Delirium is an acute, transient, and reversible state of cognitive dysfunction characterized by a fluctuating level of consciousness and impaired attention. **Explanation of the Correct Answer (C):** In delirium, **visual hallucinations** are the most common type of perceptual disturbance (e.g., seeing insects or people). While auditory hallucinations can occur, they are much more characteristic of functional psychiatric disorders like Schizophrenia. Therefore, the statement that auditory hallucinations are "more common" is incorrect. **Analysis of Other Options:** * **A. Most common organic brain disorder:** This is true. Delirium is the most frequent psychiatric syndrome encountered in general hospital settings, particularly among elderly patients and those in intensive care units (ICU psychosis). * **B. Generalized slowing of waves in EEG:** This is a hallmark diagnostic feature. Most cases of delirium show diffuse slowing of background activity (theta and delta waves). *Exception:* Delirium Tremens (alcohol withdrawal), which shows low-amplitude fast activity. * **C. Sundowning phenomenon:** This is true. It refers to the worsening of confusion and agitation during the late afternoon or evening hours, often due to diminished light and sensory input. **High-Yield Clinical Pearls for NEET-PG:** * **Core Feature:** Disturbance of **consciousness** and **attention** (unlike Dementia, where consciousness is clear). * **Onset:** Acute (hours to days) with a **fluctuating** course. * **Management:** Treat the underlying medical cause. **Haloperidol** is the drug of choice for agitation (avoid benzodiazepines unless it is alcohol withdrawal delirium). * **Asterixis** (liver flap) can often be seen in metabolic delirium.

Question 203: A person, when asked about the similarity between a chair and a table, states that both have four legs. This is an example of:

A. Concrete thinking (Correct Answer)
B. Abstract thinking
C. Neologism
D. None of the above

Explanation: **Explanation:** The correct answer is **Concrete Thinking**. In psychiatric assessment, the "Similarities Test" is used to evaluate a patient’s **Abstract Thinking** (part of the Mental Status Examination). When asked how two objects are alike, a person with intact abstract reasoning identifies a general category or conceptual relationship (e.g., "Both are furniture"). **Concrete thinking** is the inability to generalize or use metaphors. The patient focuses on literal, physical, or superficial attributes. Stating that a chair and table "both have four legs" is a literal, physical observation, indicating a lack of higher-level conceptualization. This is commonly seen in Schizophrenia, Intellectual Disability, and Organic Brain Syndromes. **Analysis of Incorrect Options:** * **B. Abstract Thinking:** This involves the ability to appreciate nuances and categorize objects based on shared concepts (e.g., "Both are items used for dining"). * **C. Neologism:** This is a thought form disorder where a patient creates entirely new words that have no meaning to others, often seen in Schizophrenia. It is unrelated to the interpretation of similarities. **Clinical Pearls for NEET-PG:** * **Proverb Interpretation:** Another way to test abstract thinking. A concrete response to "Don't cry over spilled milk" would be "If you drop milk, you shouldn't cry because you can't get it back." * **Differential Diagnosis:** Concrete thinking is a hallmark of the **Formal Thought Disorder** seen in Schizophrenia. * **Testing Sequence:** Always ensure the patient has an adequate educational background and intelligence level before diagnosing impaired abstraction.

Question 204: Which of the following can cause organic amnestic syndrome?

A. Multiple sclerosis
B. Hypoglycemia
C. Hyperglycemia (Correct Answer)
D. Hypoxia

Explanation: **Explanation:** **Organic Amnestic Syndrome** is characterized by a prominent impairment in recent memory (anterograde and retrograde amnesia) while immediate recall remains intact. It occurs in a state of clear consciousness, distinguishing it from delirium. **Why Hyperglycemia is the Correct Answer:** While several metabolic disturbances can affect cognition, **Hyperglycemia** (specifically in the context of uncontrolled diabetes or Hyperosmolar Hyperglycemic State) is a recognized cause of organic brain syndromes. Chronic or acute severe hyperglycemia leads to osmotic shifts, oxidative stress, and neuronal dysfunction in the hippocampus and diencephalon—areas critical for memory consolidation. In the context of standard psychiatric textbooks (like Niraj Ahuja), hyperglycemia is explicitly listed as a metabolic cause of amnestic syndrome alongside thiamine deficiency and hypoxia. **Analysis of Incorrect Options:** * **Multiple Sclerosis (A):** While MS causes cognitive decline and "subcortical dementia" in advanced stages, it typically presents with slowed processing and executive dysfunction rather than a pure, isolated amnestic syndrome. * **Hypoglycemia (B):** Acute hypoglycemia usually presents with delirium, confusion, or coma. While prolonged neuroglycopenia can cause permanent brain damage, it is less commonly classified as a primary cause of isolated amnestic syndrome compared to hyperglycemia in standard MCQ frameworks. * **Hypoxia (D):** While severe hypoxia (e.g., post-cardiac arrest) *can* cause amnesia, it more frequently results in global cognitive impairment or persistent vegetative states. In many standardized examinations, hyperglycemia is the preferred "metabolic" answer choice for this specific syndrome. **NEET-PG High-Yield Pearls:** * **Most Common Cause:** The most frequent cause of organic amnestic syndrome is **Thiamine (B1) deficiency** (Wernicke-Korsakoff Syndrome). * **Key Feature:** Confabulation (filling memory gaps with fabricated stories) is a hallmark sign. * **Anatomical Site:** Lesions are typically found in the **mammillary bodies**, dorsomedial nucleus of the thalamus, and the fornix. * **Preserved Functions:** Intellectual capacity, personality, and immediate registration (digit span) are usually preserved.

Question 205: Which of the following statements about thought disorder is true?

A. Perseveration is out-of-context repetition.
B. Circumstantiality is the inclusion of excessive irrelevant details that eventually lead back to the original point.
C. Verbigeration is senseless, meaningless repetition.
D. Tangentiality is skiing around the endpoint but never reaching it. (Correct Answer)

Explanation: This question tests the ability to differentiate between various formal thought disorders, which are hallmark signs in psychiatric evaluation, particularly in schizophrenia and mania. ### **Explanation of the Correct Answer** **Option D (Tangentiality)** is correct. In tangentiality, the patient responds to a question in a manner that is oblique or irrelevant. While the thoughts are connected to each other, they move further away from the central theme. The patient "skis around" the target but, crucially, **never returns to the original point** or answers the initial question. ### **Analysis of Incorrect Options** * **A. Perseveration:** This is the persistent repetition of a specific response (word, phrase, or gesture) to *different* stimuli, even when it is no longer appropriate. It is not necessarily "out-of-context" but rather an inability to shift sets, often seen in organic brain disorders. * **B. Circumstantiality:** While the definition provided in the option is technically accurate (excessive detail that eventually reaches the goal), it is not the *best* answer compared to the classic definition of tangentiality provided in Option D. In exams, if both are present, the distinction lies in the "endpoint": Circumstantiality reaches it; Tangentiality does not. * **C. Verbigeration:** Also known as "word salad" or "palilalia" in different contexts, it refers to the senseless repetition of specific words or phrases. However, the term is more specifically associated with **stereotypy** of speech. ### **NEET-PG High-Yield Pearls** * **Flight of Ideas:** Rapid shifting of ideas with logical connections (often via puns or clanging); classic for **Mania**. * **Loosening of Associations (Knight’s Move Thinking):** Lack of logical connection between thoughts; pathognomonic for **Schizophrenia**. * **Thought Blocking:** Sudden cessation in the train of thought before a thought is completed; highly suggestive of Schizophrenia. * **Neologism:** Coining new words that have meaning only to the patient.

Question 206: A 32-year-old female develops a suspicion of her husband having an affair with his secretary. This suspicion has persisted for two weeks. What is the most likely diagnosis?

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

Explanation: ### Explanation **Correct Answer: B. Delusion** The patient is exhibiting a **delusion**, specifically a **delusion of infidelity (Othello Syndrome)**. A 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 this case, the persistent suspicion of her husband’s affair, held despite a lack of evidence, fits the criteria for a delusional thought process. **Why other options are incorrect:** * **A. Illusion:** This is a **misinterpretation of a real external stimulus** (e.g., mistaking a rope for a snake in the dark). It is a disorder of perception, not thought content. * **C. Hallucination:** This is a **perception in the absence of an external stimulus** (e.g., hearing voices when no one is speaking). It is a sensory experience, whereas the patient’s issue is a belief system. * **D. Delirium:** This is an **acute confusional state** characterized by fluctuating consciousness, impaired attention, and global cognitive dysfunction, usually due to an underlying medical condition. The vignette describes a specific thought abnormality without clouding of consciousness. **High-Yield Clinical Pearls for NEET-PG:** * **Delusion of Infidelity:** Also known as **Conjugal Paranoia** or **Othello Syndrome**. It is more common in males and is frequently associated with chronic alcoholism. * **Duration Criteria:** According to ICD-11/DSM-5, a **Delusional Disorder** typically requires the presence of delusions for at least **one month**. However, in the context of identifying the *type* of psychopathology (as in this question), the nature of the belief defines it as a delusion. * **Primary vs. Secondary Delusion:** Primary delusions (Autochthonous) arise spontaneously, while secondary delusions are understandable in the context of other psychiatric symptoms (like mood or hallucinations).

Question 207: Deja vu is characteristically seen in which of the following conditions?

A. Temporal lobe epilepsy
B. Normal individuals
C. Psychosis
D. All of the above (Correct Answer)

Explanation: **Explanation:** **Déjà vu** is a phenomenon of **paramnesia** (a memory disorder) characterized by an inappropriate feeling of familiarity with a completely new situation. The correct answer is **All of the above** because this phenomenon occurs across a spectrum ranging from physiological to pathological states. 1. **Normal Individuals (Option B):** Déjà vu is most commonly experienced by healthy people, especially during periods of fatigue, stress, or travel. It is reported by approximately 60-70% of the general population, particularly in younger age groups. 2. **Temporal Lobe Epilepsy (Option A):** This is the classic pathological association. Déjà vu often occurs as a **psychic aura** in patients with focal seizures originating in the hippocampus or amygdala (medial temporal lobe). In this context, it is often accompanied by other symptoms like "Jamais vu" or epigastric rising sensations. 3. **Psychosis (Option C):** While less common than in epilepsy, déjà vu can occur in schizophrenia and other psychotic disorders. In these cases, the experience may be more prolonged, frequent, or incorporated into delusional interpretations (e.g., "I have lived this life before"). **Clinical Pearls for NEET-PG:** * **Paramnesia:** Déjà vu is a "Distortion of Memory," whereas amnesia is a "Loss of Memory." * **Jamais Vu:** The opposite of déjà vu; a feeling of unfamiliarity with a situation that is actually very familiar. It is also seen in Temporal Lobe Epilepsy. * **Confabulation:** Another form of paramnesia where gaps in memory are filled with fabricated stories, classically seen in **Wernicke-Korsakoff Syndrome**. * **Anatomical Site:** The **Hippocampus** and **Rhinal cortex** are the primary brain regions associated with the recognition memory involved in déjà vu.

Question 208: In individuals aged 2 to 18 years, the Stanford Binet Scale is most useful for evaluating what?

A. Cerebral dominance
B. General intellectual ability (Correct Answer)
C. Perceptuomotor performance
D. Memory

Explanation: **Explanation:** The **Stanford-Binet Intelligence Scale** is one of the oldest and most widely used standardized tests designed to measure **General Intellectual Ability (Intelligence Quotient - IQ)**. It assesses cognitive functions across five factors: fluid reasoning, knowledge, quantitative reasoning, visual-spatial processing, and working memory. While it can be used for individuals from age 2 to 85+ years, it is particularly high-yield in pediatric psychiatry for diagnosing intellectual disability and identifying giftedness. **Analysis of Options:** * **Option B (Correct):** The primary purpose of the Stanford-Binet scale is to provide a composite score (Full Scale IQ) that represents an individual’s overall cognitive potential and general intelligence. * **Option A (Cerebral dominance):** This refers to the functional specialization of the brain hemispheres (e.g., left-brain dominance for language). This is assessed via lateralizing neurological exams or specialized tests like the Wada test, not IQ scales. * **Option C (Perceptuomotor performance):** While the scale has non-verbal components, specific perceptuomotor or visuospatial performance is better evaluated using the **Bender Visual-Motor Gestalt Test**. * **Option D (Memory):** Although "Working Memory" is a sub-component of the Stanford-Binet, a dedicated assessment of memory would require tests like the **Wechsler Memory Scale (WMS)**. **Clinical Pearls for NEET-PG:** * **IQ Calculation:** Historically defined as (Mental Age / Chronological Age) × 100. * **Classification:** An IQ < 70, along with deficits in adaptive functioning, is required for a diagnosis of **Intellectual Disability (ID)**. * **Other High-Yield Tests:** * **WISC (Wechsler Intelligence Scale for Children):** Used for ages 6–16 years. * **Raven’s Progressive Matrices:** A culture-fair, non-verbal test of abstract reasoning. * **Vineland Adaptive Behavior Scales:** Used to assess "adaptive functioning" in ID.

Question 209: Loss of capability of doing goal-directed things, to express ideas, making irrelevant comments, but ultimately succeeding in going back to the original point is known as?

A. Commentalism
B. Tangentiality
C. Dysprosodia
D. Circumstantiality (Correct Answer)

Explanation: ### Explanation **Correct Answer: D. Circumstantiality** **Circumstantiality** is a disorder of the **flow/continuity of thought** characterized by the inclusion of excessive, unnecessary, and tedious details. While the patient makes irrelevant comments and loses the capability of direct goal-directed speech initially, the defining feature is that they **eventually return to the original point** or answer the question asked. It is commonly seen in individuals with Obsessive-Compulsive Disorder (OCD), epilepsy, or intellectual disabilities. **Analysis of Incorrect Options:** * **B. Tangentiality:** Similar to circumstantiality, the patient wanders off-topic with irrelevant ideas. However, the crucial difference is that in tangentiality, the patient **never returns to the original point** or goal. * **C. Dysprosodia:** This is a disorder of the **form of speech** (not thought), where there is an impairment in the rhythm, pitch, and intonation of speech. It is often seen in neurological conditions like Parkinson’s disease or right-hemisphere lesions. * **A. Commentalism:** This is not a standard psychiatric term for thought disorders. It may be confused with "commenting hallucinations" (third-person auditory hallucinations), which is a Schneiderian First Rank Symptom of Schizophrenia. **NEET-PG High-Yield Pearls:** * **Circumstantiality:** "The long-winded road that leads home." (Returns to goal). * **Tangentiality:** "The road that leads nowhere." (Never returns to goal). * **Flight of Ideas:** Rapid shifting of ideas with a logical connection (often via puns or clanging); characteristic of **Mania**. * **Loosening of Associations (Knight’s Move Thinking):** Shifting between unrelated ideas with no logical connection; characteristic of **Schizophrenia**.

Question 210: Which of the following is NOT true regarding Frontotemporal Dementia (FTD)?

A. Semantic dementia can be a subtype of FTD.
B. Nonfluent aphasia can be a feature of FTD.
C. Apathetic or disinhibited personality changes can occur in FTD.
D. FTD typically presents with a rapid onset and static course. (Correct Answer)

Explanation: **Explanation:** Frontotemporal Dementia (FTD) is a neurodegenerative disorder characterized by the progressive atrophy of the frontal and temporal lobes. **Why Option D is the correct answer (False statement):** FTD, like most neurodegenerative dementias (e.g., Alzheimer’s), follows an **insidious (gradual) onset** and a **progressive course**. A "rapid onset and static course" is characteristic of conditions like vascular dementia (step-ladder pattern) or acute brain injuries/delirium, rather than a primary degenerative process. **Analysis of other options:** * **Option A & B:** FTD is an umbrella term. It includes the **Behavioral variant (bvFTD)** and **Primary Progressive Aphasia (PPA)**. PPA is further divided into **Semantic dementia** (loss of word meaning) and **Nonfluent/Agrammatic aphasia** (difficulty with speech production). * **Option C:** Behavioral changes are the hallmark of bvFTD. Patients often exhibit **disinhibition** (socially inappropriate behavior, impulsivity) or profound **apathy** (loss of motivation), often preceding memory loss. **High-Yield Clinical Pearls for NEET-PG:** * **Age of Onset:** FTD typically occurs at a younger age than Alzheimer’s, usually between **45–65 years**. * **Pick’s Disease:** A subtype of FTD characterized histologically by **Pick bodies** (silver-staining intracytoplasmic inclusions of tau protein) and **Pick cells** (swollen neurons). * **Memory vs. Behavior:** Unlike Alzheimer’s, where memory loss is the earliest symptom, FTD presents first with **personality changes** and **executive dysfunction**, while visuospatial skills remain relatively preserved. * **Imaging:** MRI shows focal "knife-edge" atrophy of the frontal and temporal lobes.

Practice by Chapter

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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