Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis Indian Medical PG Practice Questions and MCQs

Question 61: Prosopagnosia is defined as:

A. Inability to perform fine motor movements.
B. Inability to recognize faces. (Correct Answer)
C. A condition seen in Balint's syndrome.
D. A condition associated with Gerstmann syndrome.

Explanation: **Explanation:** **Prosopagnosia** (from the Greek *prosopon* meaning "face" and *agnosia* meaning "non-knowledge") is a specific type of visual agnosia characterized by the **inability to recognize familiar faces**, including one’s own, despite intact vision and intellectual functioning. Patients often rely on non-facial cues like voice, gait, or clothing to identify individuals. **Analysis of Options:** * **Option B (Correct):** The underlying medical concept involves a lesion in the **fusiform gyrus** (specifically the fusiform face area), located in the basal temporal-occipital region. It is most commonly associated with bilateral or right-sided lesions. * **Option A (Incorrect):** The inability to perform purposeful motor movements despite intact motor function is called **Apraxia**. * **Option C (Incorrect):** While Prosopagnosia can occur with various posterior brain lesions, **Balint’s syndrome** is a distinct triad of Simultanagnosia (inability to perceive the visual field as a whole), Ocular Apraxia, and Optic Ataxia, typically due to bilateral parietal-occipital lesions. * **Option D (Incorrect):** **Gerstmann syndrome** results from a lesion in the dominant (usually left) angular gyrus and consists of four specific findings: Finger agnosia, Agraphia, Acalculia, and Left-right disorientation. **High-Yield Clinical Pearls for NEET-PG:** * **Anatomical Site:** Fusiform gyrus (Occipitotemporal lobe). * **Capgras Syndrome:** A related psychiatric delusion where a patient recognizes a face but believes the person has been replaced by an identical **imposter**. * **Fregoli Syndrome:** The delusional belief that different people are actually a single person in disguise.

Question 62: A 30-year-old woman reports that the trunk of a particular tree near her apartment resembles the face of Lord Ram. She can see this face every time she walks past that tree, but not on other trees. What is this phenomenon known as?

A. Delusional misidentification
B. Delusion of reference
C. Illusion (Correct Answer)
D. Visual hallucination

Explanation: ### Explanation **Correct Answer: C. Illusion** **Why it is correct:** An **illusion** is defined as a **misinterpretation of a real external sensory stimulus**. In this scenario, the tree trunk (a real object) is being misinterpreted as a face. A specific subtype of illusion seen here is **Pareidolia**, where a person perceives a meaningful image (like a face or animal) in a random or ambiguous visual pattern (like clouds or tree bark). Unlike hallucinations, an external stimulus is always present in an illusion. **Why the other options are wrong:** * **A. Delusional misidentification:** This refers to syndromes like Capgras (believing a familiar person is replaced by an impostor) or Fregoli (believing a stranger is a familiar person in disguise). It involves a fixed false belief regarding identity, not a sensory misperception of an object. * **B. Delusion of reference:** This is a thought disorder where a patient falsely believes that neutral events or coincidences (like a news report or a song) have a special, personal significance or are directed specifically at them. * **D. Visual hallucination:** This is a sensory perception in the **absence** of any external stimulus. If the woman saw a face appearing in thin air where no tree existed, it would be a hallucination. **High-Yield Clinical Pearls for NEET-PG:** * **Illusion vs. Hallucination:** The presence of an external stimulus is the "litmus test." (Stimulus present = Illusion; Stimulus absent = Hallucination). * **Pareidolia:** A normal phenomenon (not necessarily pathological) where vague stimuli are perceived as significant. * **Completion Illusion:** Misreading a word because the mind "fills in" the gaps based on expectation (common in states of inattention). * **Affective Illusion:** Occurs due to intense emotions (e.g., a person terrified in the dark perceiving a coat rack as a ghost).

Question 63: Which of the following is a feature of hypochondriasis?

A. Abnormal preoccupation with abnormal body function
B. Abnormal preoccupation with normal body function (Correct Answer)
C. Normal preoccupation with abnormal body function
D. Normal preoccupation with normal body function

Explanation: **Explanation:** **Hypochondriasis** (now classified as **Illness Anxiety Disorder** in DSM-5) is a somatic symptom-related disorder characterized by a persistent fear or belief that one has a serious medical illness. **Why Option B is Correct:** The core psychopathology of hypochondriasis is the **misinterpretation of benign physical signs or sensations**. Patients exhibit an **abnormal preoccupation with normal body functions** (e.g., heartbeat, sweating, peristalsis) or minor physical irregularities (e.g., a small sore or a cough). They perceive these normal physiological processes as evidence of a grave disease, despite appropriate medical evaluation and reassurance. **Analysis of Incorrect Options:** * **Option A:** Preoccupation with *abnormal* body function is a rational response to illness. If a function is truly abnormal, seeking medical attention is appropriate, not hypochondriacal. * **Option C:** A *normal* level of concern regarding an *abnormal* function is a healthy health-seeking behavior. * **Option D:** This describes a healthy individual with no somatic concerns. **High-Yield Clinical Pearls for NEET-PG:** * **Duration:** Symptoms must persist for at least **6 months** for diagnosis. * **Doctor Shopping:** Patients frequently visit multiple doctors (poly-doctoring) and are often dissatisfied with negative test results. * **Insight:** Insight is often poor; however, unlike delusional disorder (somatic type), the belief in hypochondriasis is not fixed with absolute certainty. * **Treatment:** **Cognitive Behavioral Therapy (CBT)** is the first-line treatment. SSRIs are useful if there is comorbid anxiety or depression. * **DSM-5 Update:** Hypochondriasis is now largely replaced by **Illness Anxiety Disorder** (where somatic symptoms are minimal/absent) and **Somatic Symptom Disorder** (where significant somatic symptoms are present).

Question 64: A person developing hatred towards his brother starts overcaring him and brings him gifts. This is an example of?

A. Sublimation
B. Passive aggression
C. Reaction formation (Correct Answer)
D. Dissociation

Explanation: **Explanation:** The correct answer is **Reaction Formation**. This is a defense mechanism where an individual transforms an unacceptable impulse, feeling, or thought into its exact opposite. In this scenario, the person harbors "hatred" (an unacceptable impulse) toward his brother. To manage the anxiety caused by this feeling, he adopts the opposite behavior—"overcaring" and "bringing gifts." This behavior is often exaggerated, rigid, or inappropriate in its intensity. **Analysis of Incorrect Options:** * **Sublimation:** This is a mature defense mechanism where socially unacceptable impulses are channeled into socially productive and acceptable activities (e.g., an aggressive person becoming a professional boxer). * **Passive Aggression:** This involves expressing hostility indirectly through procrastination, stubbornness, or intentional inefficiency rather than addressing the conflict directly. * **Dissociation:** This involves a temporary, drastic modification of one’s character or sense of identity to avoid emotional distress (e.g., "spacing out" or fugue states). **High-Yield Clinical Pearls for NEET-PG:** * **Reaction Formation** is commonly associated with **Obsessive-Compulsive Disorder (OCD)** (e.g., a person with aggressive urges becomes excessively polite). * **Key distinction:** Unlike *Sublimation* (which is mature and healthy), *Reaction Formation* is considered a **neurotic defense mechanism**. * **Identification Tip:** Look for "excessive" or "over-the-top" positive behavior that seems out of place given the underlying conflict.

Question 65: Delusion is not present in which of the following conditions?

A. Delirium
B. Mania
C. Depression
D. Compulsive disorder (Correct Answer)

Explanation: **Explanation:** The core of this question lies in distinguishing between **disorders of thought content** (Delusions) and **disorders of thought possession** (Obsessions/Compulsions). **Why Compulsive Disorder is the correct answer:** In **Obsessive-Compulsive Disorder (OCD)**, the patient experiences intrusive thoughts (obsessions) or urges to perform repetitive acts (compulsions). A defining feature of OCD is **preserved insight**. The patient recognizes these thoughts/acts as irrational, excessive, and originating from their own mind (ego-dystonic). In contrast, a **delusion** is a fixed, false belief held with absolute certainty despite contrary evidence and a lack of insight. Therefore, delusions are not a feature of pure compulsive disorders. **Analysis of incorrect options:** * **Delirium:** This is an acute organic brain syndrome characterized by clouded consciousness. Patients frequently experience fleeting, fragmented, and poorly systematized delusions (often paranoid) alongside hallucinations. * **Mania:** Delusions are common in Bipolar Disorder (Manic episode). These are typically **delusions of grandeur** (inflated self-worth, power, or special identity), consistent with the elevated mood. * **Depression:** In severe depression (Psychotic Depression), patients may develop **mood-congruent delusions**, such as delusions of guilt, poverty, or nihilistic delusions (Cotard’s syndrome). **High-Yield Clinical Pearls for NEET-PG:** 1. **Insight Scale:** Insight is absent in Psychosis (Delusions) but typically present in Neurosis (OCD/Phobias). 2. **Overvalued Idea:** A bridge between a normal belief and a delusion; it is a preoccupied belief that is not quite fixed but dominates the patient's life (e.g., Anorexia Nervosa). 3. **Primary vs. Secondary Delusion:** Primary delusions (Autochthonous) appear suddenly without a preceding mental event and are pathognomonic for Schizophrenia (Schneiderian First Degree Symptom).

Question 66: A feeling of detachment from self and the sensation of being an external observer of one's own body is suggestive of which of the following?

A. Dissociative fugue
B. Dissociative identity disorder
C. Depersonalization (Correct Answer)
D. Trance

Explanation: **Explanation:** The correct answer is **Depersonalization**. This is a dissociative symptom characterized by a persistent or recurrent feeling of being detached from one’s mental processes or body. Patients often describe it as being an **"outside observer"** of their own life, feeling like a robot, or living in a dream. Crucially, reality testing remains intact (the patient knows it is just a feeling and not reality). **Analysis of Incorrect Options:** * **Dissociative Fugue:** This involves sudden, unexpected travel away from home combined with an inability to recall one's past and often the assumption of a new identity. * **Dissociative Identity Disorder (DID):** Formerly known as Multiple Personality Disorder, this involves the presence of two or more distinct personality states that take control of behavior, accompanied by significant memory gaps. * **Trance:** This is a temporary marked alteration in the state of consciousness or loss of the customary sense of personal identity, often associated with narrowing of awareness of the immediate surroundings. **High-Yield Clinical Pearls for NEET-PG:** * **Derealization vs. Depersonalization:** While depersonalization is detachment from *self*, **derealization** is a feeling of detachment from the *environment* (the world feels "unreal," "foggy," or "like a movie set"). They often occur together. * **Reality Testing:** In Depersonalization/Derealization Disorder, reality testing is **preserved**, which distinguishes it from psychotic disorders. * **Common Associations:** These symptoms are frequently seen in Panic Disorder, PTSD, and Temporal Lobe Epilepsy (TLE). * **Treatment:** The primary treatment is Psychotherapy (CBT/DBT); there are no FDA-approved medications specifically for this condition.

Question 67: A patient states, "I was born in Kerala, at the age of 26 I got a job. 2 years later I got married. Now I am living in Bangalore." This is an example of what?

A. Clang association
B. Neologism
C. Circumstantiality (Correct Answer)
D. Thought broadcast

Explanation: ### Explanation **Correct Option: C. Circumstantiality** **Why it is correct:** Circumstantiality is a formal thought disorder characterized by a pattern of speech that is filled with **excessive, unnecessary details and parenthetical remarks**. While the patient eventually reaches the "point" or answers the original question, they take a long, circuitous route to get there. In this clinical vignette, the patient provides a chronological history of their birth, job, and marriage before finally answering the implied question about their current residence. The key feature is that the goal of the conversation is eventually reached. **Why the other options are incorrect:** * **A. Clang association:** This refers to speech where the choice of words is governed by sounds (rhyming or punning) rather than logical meaning (e.g., "I am tall, I had a fall, I went to the hall"). * **B. Neologism:** This involves the creation of new words that have a private meaning to the patient but are nonsensical to others. * **D. Thought broadcast:** This is a delusional belief (a disorder of thought *content*, not *form*) where the patient feels their private thoughts are being transmitted out loud so that others can hear them. **High-Yield Clinical Pearls for NEET-PG:** * **Circumstantiality vs. Tangentiality:** In circumstantiality, the patient **reaches the goal**. In tangentiality, the patient drifts off-topic and **never reaches the goal**. * **Common Associations:** Circumstantiality is frequently seen in patients with **Obsessive-Compulsive Disorder (OCD)**, epilepsy, or certain personality disorders. * **Flight of Ideas:** Rapid shifting between ideas where the connections are based on understandable links (often seen in Mania). * **Loosening of Associations (Knight’s Move Thinking):** A hallmark of **Schizophrenia**, where there is no logical connection between consecutive thoughts.

Question 68: Psychogenic amnesia is characterized by?

A. Anterograde amnesia
B. Retrograde amnesia
C. Both with confabulation
D. Patchy impairment of personal memories (Correct Answer)

Explanation: **Explanation:** **Psychogenic amnesia** (also known as Dissociative Amnesia) is a dissociative disorder characterized by an inability to recall important personal information, usually of a traumatic or stressful nature, that is too extensive to be explained by ordinary forgetfulness. **Why Option D is Correct:** The hallmark of psychogenic amnesia is the **loss of personal identity and autobiographical memory**, while procedural and semantic memory (general knowledge) remain intact. The memory loss is typically **patchy and selective**, focusing on specific traumatic events or periods of time. Unlike organic amnesia, there is no underlying brain lesion; the "block" is psychological, serving as a defense mechanism against emotional distress. **Analysis of Incorrect Options:** * **Option A (Anterograde Amnesia):** This is the inability to form new memories after an insult. It is characteristic of **organic brain syndromes** (e.g., Wernicke-Korsakoff syndrome, head trauma or benzodiazepine use) rather than psychogenic causes. * **Option B (Retrograde Amnesia):** While psychogenic amnesia involves past memories, pure retrograde amnesia in organic cases usually follows a temporal gradient (Ribot’s Law). In psychogenic cases, the loss is specifically linked to **personal identity**, which distinguishes it from simple retrograde loss. * **Option C (Confabulation):** Confabulation (filling memory gaps with fabricated stories) is a classic feature of **Korsakoff’s Psychosis** (organic amnesia due to Thiamine deficiency). Patients with psychogenic amnesia typically do not confabulate; they are often aware of the "gap" or may appear indifferent to it (*la belle indifférence*). **High-Yield Clinical Pearls for NEET-PG:** * **Dissociative Fugue:** A subtype of psychogenic amnesia involving sudden, unexpected travel away from home combined with an inability to recall one's past and the assumption of a new identity. * **Ganser Syndrome:** Also known as "approximate answers," often seen in prisoners; it is a dissociative disorder, not to be confused with pure psychogenic amnesia. * **Treatment:** The primary approach is psychotherapy; however, **Abreaction** (using sodium amobarbital or diazepam) can be used to facilitate the recovery of repressed memories.

Question 69: Which of the following is considered a functional disorder?

A. Fugue
B. Conversion disorder
C. Hypochondriasis
D. All of the above (Correct Answer)

Explanation: ### Explanation In psychiatry, a **functional disorder** refers to a condition where there is an impairment in bodily or mental functioning, but **no underlying structural, organic, or biochemical lesion** can be identified through current diagnostic methods (like MRI or blood tests). These disorders are primarily psychological in origin. * **Fugue (Dissociative Fugue):** A dissociative disorder characterized by sudden, unexpected travel away from home, accompanied by an inability to recall one's past and confusion about personal identity. It is a functional disruption of memory and identity. * **Conversion Disorder (Functional Neurological Symptom Disorder):** This involves neurological symptoms (e.g., paralysis, blindness, seizures) that cannot be explained by a neurological disease. The "conversion" refers to the transformation of psychological distress into physical symptoms. * **Hypochondriasis (Illness Anxiety Disorder):** A condition where a person is preoccupied with the fear of having a serious disease based on a misinterpretation of bodily symptoms, despite medical reassurance. It is a functional disorder of thought and perception regarding health. Since all three conditions lack an organic pathology and are driven by psychological processes, **Option D** is the correct answer. ### High-Yield Clinical Pearls for NEET-PG: * **Organic vs. Functional:** If a patient presents with psychiatric symptoms and visual hallucinations, fluctuating consciousness, or disorientation, suspect an **Organic** cause (e.g., Delirium). * **La Belle Indifference:** Classically associated with **Conversion Disorder**, where the patient shows a surprising lack of concern regarding their severe physical disability. * **Primary Gain vs. Secondary Gain:** Functional disorders often involve **Primary Gain** (keeping internal conflicts out of awareness), whereas Malingering involves **Secondary Gain** (external benefits like avoiding work).

Question 70: EEG changes are useful in the diagnosis of which of the following dementias?

A. Alzheimer's disease
B. Pick's disease
C. Prion-associated dementia (Correct Answer)
D. Vascular dementia

Explanation: **Explanation:** The correct answer is **Prion-associated dementia** (specifically Creutzfeldt-Jakob Disease or CJD). In most dementias, EEG changes are non-specific (usually generalized slowing). However, in **Creutzfeldt-Jakob Disease (CJD)**, the EEG is a critical diagnostic tool. It characteristically shows **Periodic Sharp Wave Complexes (PSWCs)**—specifically, triphasic synchronous discharges occurring at a rate of 0.5 to 2.0 seconds. These findings are highly specific (approx. 90%) for CJD in the correct clinical context of rapid cognitive decline and myoclonus. **Analysis of Incorrect Options:** * **A. Alzheimer’s Disease:** EEG is typically normal in early stages. As the disease progresses, it shows non-specific generalized slowing (increased theta and delta waves) and a decrease in alpha activity, which is not diagnostic. * **B. Pick’s Disease (Frontotemporal Dementia):** The EEG is remarkably often **normal** even in advanced stages of the disease, which can actually help differentiate it from Alzheimer’s. * **C. Vascular Dementia:** EEG findings are inconsistent and depend on the location of infarcts; they may show focal slowing but lack a pathognomonic diagnostic pattern. **NEET-PG High-Yield Pearls:** * **CJD Triad:** Rapidly progressive dementia, Myoclonus, and Periodic complexes on EEG. * **CSF Marker for CJD:** 14-3-3 protein (though brain biopsy remains the gold standard). * **MRI in CJD:** Look for "Pulvinar sign" (thalamus) or "Hockey stick sign" (striatum) and cortical ribboning. * **Normal Pressure Hydrocephalus (NPH):** Another dementia-related condition where EEG is usually normal, helping differentiate it from metabolic encephalopathies.

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Mental Status Examination

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Diagnostic Formulation

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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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