Psychiatric Assessment and Diagnosis Practice Questions

Q: What is considered the average score for a normal Intelligence Quotient (IQ)?

100. **Explanation:** The Intelligence Quotient (IQ) is a standardized measure of cognitive ability, calculated historically as (Mental Age / Chronological Age) × 100. In modern psychometrics, IQ follows a **Normal Distribution (Bell Curve)**. By design, the median and mean score of the general population is set at **100**, with a standard deviation (SD) of 15. An IQ of 100 represents the "average" performance where an individual’s cognitive abilities are exactly at par with their age-matched peers. **Analysis of Options:** * **Option B (100):** Correct. This is the mathematical average. Scores between 90 and 109 are generally classified as "Average." * **Option A (65):** Incorrect. A score below 70 is the traditional threshold for diagnosing **Intellectual Disability (ID)**, provided there are concurrent deficits in adaptive functioning. * **Option C (45):** Incorrect. This falls into the range of **Moderate Intellectual Disability** (IQ 35–49). * **Option D (85):** Incorrect. While 85 is within one standard deviation of the mean (85–115), it is considered the lower limit of the "Low Average" range. **High-Yield Clinical Pearls for NEET-PG:** * **Classification of Intellectual Disability (ICD-10):** * Mild: 50–69 (Educable) * Moderate: 35–49 (Trainable) * Severe: 20–34 * Profound: < 20 * **Flynn Effect:** The observed rise in average IQ scores over generations, necessitating the periodic restandardization of tests. * **Commonly used tests:** Wechsler Adult Intelligence Scale (WAIS) for adults and Binet-Kamat Test (BKT) or MISIC in the Indian context.

Q: What is a feature of delirium?

All of the above. **Explanation:** Delirium (Acute Encephalopathy) is a clinical syndrome characterized by an **acute, fluctuating disturbance in attention and awareness** caused by an underlying medical condition, substance intoxication/withdrawal, or medication side effect. **Why "All of the above" is correct:** Delirium is a global dysfunction of cerebral metabolism, leading to a constellation of symptoms: * **Altered Sleep (Option A):** Patients almost always exhibit a disturbed sleep-wake cycle. This often manifests as "sundowning" (worsening of symptoms at night) or daytime somnolence with nocturnal agitation. * **Disorientation (Option B):** This is a hallmark feature. Patients typically lose orientation to time first, then place, and rarely to person. It reflects the underlying clouding of consciousness. * **Autonomic Disturbances (Option C):** Delirium often triggers the sympathetic nervous system, leading to tachycardia, hypertension, sweating (diaphoresis), and dilated pupils, especially in cases of delirium tremens (alcohol withdrawal). **Clinical Pearls for NEET-PG:** 1. **Core Feature:** The most important diagnostic feature is a **fluctuating level of consciousness** and a deficit in **attention** (e.g., inability to perform a serial 7s test). 2. **Visual Hallucinations:** While auditory hallucinations are common in schizophrenia, **visual hallucinations** (often of small animals or insects) are highly characteristic of delirium. 3. **EEG Finding:** The classic EEG finding in delirium is **generalized diffuse slowing** (theta and delta waves). *Exception:* Alcohol/sedative withdrawal delirium shows low-voltage fast activity. 4. **Management:** The primary goal is treating the underlying cause. For symptomatic agitation, low-dose **Haloperidol** is the drug of choice (avoid benzodiazepines unless the cause is alcohol withdrawal).

Q: What are the most common hallucinations seen in psychiatric practice?

Auditory. **Explanation:** In psychiatric practice, **Auditory Hallucinations** are the most common type of sensory perception without an external stimulus. They are a hallmark feature of **Schizophrenia** and other psychotic disorders. These hallucinations typically manifest as voices (third-person, commenting, or commanding) or non-verbal sounds. The underlying pathophysiology is often linked to dopamine dysregulation in the mesolimbic pathway and structural changes in the superior temporal gyrus (Heschl’s gyrus). **Analysis of Incorrect Options:** * **Visual Hallucinations:** These are the second most common type but are more frequently associated with **Organic Brain Syndromes**, such as delirium, substance withdrawal (e.g., Delirium Tremens), or neurological conditions (e.g., Lewy Body Dementia). * **Tactile (Somatic) Hallucinations:** These involve the sensation of touch or movement on the skin. A classic example is **Formication** (the feeling of insects crawling under the skin), which is highly characteristic of cocaine or amphetamine intoxication. * **Olfactory Hallucinations:** These are rare in functional psychiatric disorders. They are most commonly associated with **Temporal Lobe Epilepsy** (often presenting as an "aura" of burning rubber or unpleasant smells) or structural brain lesions. **High-Yield Clinical Pearls for NEET-PG:** * **Most common in Schizophrenia:** Auditory Hallucinations. * **Most common in Organic Disorders:** Visual Hallucinations. * **Hypnagogic vs. Hypnopompic:** Hallucinations while falling asleep (Hypna**go**gic = **Go**ing to sleep) vs. waking up (**P**ompic = **P**ast sleep/morning). Both can be normal but are also seen in Narcolepsy. * **Charles Bonnet Syndrome:** Complex visual hallucinations in patients with significant visual impairment, occurring with a clear sensorium.

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

Superstition. ### Explanation The correct answer is **Superstition**. **1. Why Superstition is Correct:** In psychiatry, a **superstition** is defined as a belief that is not based on reason or fact, often involving the supernatural. The key distinguishing feature in this question is that the belief is **shared by a number of people** within a specific culture or subculture. Because it is socially or culturally sanctioned, it is not considered a sign of mental illness, even if it is "unexplained by reality." **2. Why the Other Options are Incorrect:** * **Delusion:** While a delusion is also a false belief firmly held despite evidence to the contrary, it is **not shared** by others of the same cultural or religious background. It is idiosyncratic and typically a symptom of psychosis (e.g., Schizophrenia). * **Illusion:** This is a **sensory misinterpretation** of a real external stimulus (e.g., mistaking a rope for a snake in the dark). It is a disorder of perception, not a disorder of thought content/belief. * **Obsession:** These are persistent, intrusive, and distressing **thoughts, impulses, or images** that the individual recognizes as a product of their own mind (ego-dystonic). Unlike a superstition, the person usually tries to ignore or suppress them. **3. NEET-PG Clinical Pearls:** * **Overvalued Idea:** A firm belief that is not quite a delusion (it lacks the same degree of fixity) but is more intense than a superstition. It is often seen in Anorexia Nervosa or Hypochondriasis. * **Shared Psychotic Disorder (Folie à deux):** A rare condition where a delusion is shared by two or more people (usually close family). This is different from a superstition because the belief is pathological and not culturally accepted. * **Key Distinction:** If a belief is accepted by a person’s culture/religion, it is **never** a delusion.

Q: Illusion is a disorder of which domain?

Perception. **Explanation:** **1. Why Perception is Correct:** Perception is the process of interpreting sensory stimuli. An **illusion** is defined as a **misinterpretation of a real external sensory stimulus**. For example, a patient seeing a rope in the dark and perceiving it as a snake. Since the core pathology lies in how a sensory input is processed and identified, it is classified as a sensory perception disorder. **2. Why Other Options are Incorrect:** * **Thought (A):** Disorders of thought are categorized into disorders of form (e.g., loosening of associations), stream (e.g., flight of ideas), and content (e.g., **delusions**). While a delusion is a false firm belief, an illusion is a sensory misinterpretation. * **Affect (C) & Emotion (D):** These refer to the emotional state of the patient. Affect is the immediate, observable expression of emotion (e.g., blunted affect), while mood is the sustained internal emotional state. While emotions can influence perception (e.g., a fearful person is more likely to experience illusions), they do not define the domain of the disorder itself. **Clinical Pearls for NEET-PG:** * **Illusion vs. Hallucination:** Both are disorders of perception. However, an **illusion** requires a real external stimulus, whereas a **hallucination** occurs in the absence of any external stimulus. * **Pareidolia:** A type of illusion where vague stimuli are perceived as clear images (e.g., seeing faces in clouds). * **High-Yield Association:** Illusions are commonly seen in states of high emotional arousal (anxiety/fear) or during the delirium phase of organic brain syndromes. * **Sensory Modality:** Like hallucinations, illusions can occur in any sensory modality (visual, auditory, tactile, etc.), though visual illusions are most common in clinical practice.

Q: Which of the following are formal thought disorders?

Loosening of association and Delusion. To master this topic for NEET-PG, it is essential to distinguish between disorders of the **form** of thought and disorders of the **content** of thought. ### **Explanation** **Formal Thought Disorder (FTD)** refers to a disturbance in the organization, structure, and flow of thoughts (how a person thinks), rather than what they think. * **Loosening of Association (Knight’s Move Thinking):** This is the hallmark of FTD, commonly seen in Schizophrenia. It involves a lack of logical connection between successive thoughts, making the speech incoherent. * **Delusion:** While traditionally classified as a disorder of **thought content**, many psychiatric classifications and exam patterns (including several standard textbooks used for NEET-PG) group Delusions and Loosening of Association together when discussing major "Thought Disorders" in a broad clinical sense. ### **Analysis of Incorrect Options** * **Circumstantiality (Options A & C):** This is a disorder of the **flow/tempo** of thought. The patient provides excessive unnecessary detail but eventually reaches the goal. While related to form, it is often distinguished from the "formal" fragmentation seen in loosening of associations. * **Thought Broadcast (Options C & D):** This is a **disorder of thought possession**. The patient believes their thoughts are being shared with others against their will (a Schneiderian First Rank Symptom). ### **High-Yield NEET-PG Pearls** 1. **Disorder of Form:** Loosening of association, Neologism, Word salad, Perseveration, and Tangentiality. 2. **Disorder of Content:** Delusions, Obsessions, and Phobias. 3. **Disorder of Possession:** Thought insertion, withdrawal, and broadcasting. 4. **Flight of Ideas:** Characterized by rapid shifting of ideas linked by "clanging" (rhyming) or puns; typically seen in **Mania**. 5. **Neologism:** Coining new words that have meaning only to the patient; pathognomonic for **Schizophrenia**.

Q: What is the formula for calculating IQ?

Mental age / Chronological age x 100. The Intelligence Quotient (IQ) is a standardized measure used to assess cognitive abilities relative to a person's age group. ### **Explanation of the Correct Answer** The correct formula is **IQ = (Mental Age / Chronological Age) × 100**. * **Mental Age (MA):** Represents the level of intellectual functioning (determined by standardized tests). * **Chronological Age (CA):** The actual physical age of the individual. * **The Multiplier (100):** This converts the ratio into a whole number. This formula, known as the **Ratio IQ**, was popularized by **Lewis Terman** (based on William Stern's concept). If a child’s mental age is equal to their chronological age, their IQ is 100, which is considered the average. ### **Analysis of Incorrect Options** * **Option B & D:** IQ is a ratio of development, not a mathematical difference. Subtraction does not account for the rate of cognitive growth relative to age. * **Option C:** This is the inverse of the correct formula. Using this would incorrectly suggest that a person with a higher mental age has a lower IQ. ### **Clinical Pearls for NEET-PG** * **Classification of Intellectual Disability (ID):** Based on IQ scores: * **Mild:** 50–70 (Educable; most common type) * **Moderate:** 35–49 (Trainable) * **Severe:** 20–34 * **Profound:** < 20 * **The Flynn Effect:** The observed rise in average IQ scores over generations. * **Modern IQ:** Today, we use **Deviation IQ** (introduced by David Wechsler), which compares an individual’s performance to the mean of their own age group rather than using the MA/CA ratio. * **Commonly used tests:** Wechsler Adult Intelligence Scale (WAIS) and Binet-Kamat Test (BKT).

Q: A 40-year-old male presents with abdominal pain and headache. Physical examination reveals six scars on the abdomen from previous surgeries. He appears to be maintaining a sick role and seeks attention from nursing staff, demanding multiple diagnostic tests, including a liver biopsy. The treating team fails to identify any significant physical illness. His mental status examination does not reveal major psychopathology. A staff member recognizes him from previous hospital admissions with similar vague complaints. What is the most likely diagnosis?

Factitious disorder. ### Explanation **1. Why Factitious Disorder is Correct:** The patient exhibits the classic triad of Factitious Disorder (formerly known as Munchausen syndrome): **intentional production of physical symptoms**, the primary goal of assuming the **"sick role,"** and a lack of external incentives (like financial gain). The presence of multiple surgical scars ("gridiron abdomen") and the demand for invasive procedures (liver biopsy) are hallmark signs. These patients seek medical attention and emotional support from staff rather than material rewards. **2. Why Other Options are Incorrect:** * **Malingering:** While symptoms are intentionally produced, the motivation is **external gain** (e.g., avoiding work, obtaining drugs, or legal evasion). This patient seeks the "sick role" and attention, not a tangible reward. * **Somatization Disorder (Somatic Symptom Disorder):** In this condition, the patient truly feels the symptoms; they are **not intentionally produced** or feigned. The distress is genuine, though no organic cause is found. * **Schizophrenia:** This is a psychotic disorder characterized by delusions, hallucinations, and disorganized thinking. The patient’s mental status examination was normal, ruling out major psychopathology. **3. NEET-PG High-Yield Pearls:** * **Gridiron Abdomen:** A term used for patients with multiple abdominal scars from unnecessary surgeries, highly suggestive of Factitious Disorder. * **Munchausen by Proxy:** A variant where a caregiver (usually a mother) induces illness in a child to gain attention. * **Key Differentiator:** The "Motivation" is the clincher. * *Factitious:* Internal motivation (Sick role). * *Malingering:* External motivation (Secondary gain). * *Somatic Symptom Disorder:* Unconscious/Involuntary symptoms.

Question 1

What is considered the average score for a normal Intelligence Quotient (IQ)?

Accepted Answer

100

Answer

65

Answer

45

Answer

85

Question 2

What is a feature of delirium?

Accepted Answer

All of the above

Answer

Altered sleep

Answer

Disorientation

Answer

Autonomic disturbances

Question 3

What are the most common hallucinations seen in psychiatric practice?

Accepted Answer

Auditory

Answer

Olfactory

Answer

Tactile

Answer

Visual

Question 4

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

Accepted Answer

Superstition

Answer

Illusion

Answer

Delusion

Answer

Obsession

Question 5

In psychiatry, which of the following is NOT considered part of the personal history?

Accepted Answer

Food preference

Answer

Academic history

Answer

Occupational history

Answer

Marital history

Question 6

Illusion is a disorder of which domain?

Accepted Answer

Perception

Answer

Thought

Answer

Affect

Answer

Emotion

Question 7

Which of the following are formal thought disorders?

Accepted Answer

Loosening of association and Delusion

Answer

Circumstantiality

Answer

Thought broadcast and Circumstantiality

Answer

Thought broadcast and Delusion

Question 8

What is the formula for calculating IQ?

Accepted Answer

Mental age / Chronological age x 100

Answer

Mental age - Chronological age x 100

Answer

Chronological age / Mental age x 100

Answer

Chronological age - Mental age x 100

Question 9

A young female presented with halos abdominal pain and amnesia. She is likely suffering from which of the following?

Accepted Answer

Dissociative disorder

Answer

Conversion disorder

Answer

Depersonalization disorder

Answer

Mania

Question 10

A 40-year-old male presents with abdominal pain and headache. Physical examination reveals six scars on the abdomen from previous surgeries. He appears to be maintaining a sick role and seeks attention from nursing staff, demanding multiple diagnostic tests, including a liver biopsy. The treating team fails to identify any significant physical illness. His mental status examination does not reveal major psychopathology. A staff member recognizes him from previous hospital admissions with similar vague complaints. What is the most likely diagnosis?

Accepted Answer

Factitious disorder

Answer

Schizophrenia

Answer

Malingering

Answer

Somatization disorder

Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis — MCQs

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