Psychiatric Assessment and Diagnosis Practice Questions

Q: What is a characteristic feature of subcortical dementia?

Memory loss. **Explanation:** Dementia is broadly classified into **cortical** and **subcortical** types based on the primary site of pathology. **Why Memory Loss is correct:** Memory loss is a core feature of all dementias, including subcortical dementia. However, the *nature* of the memory deficit differs. In subcortical dementia (e.g., Parkinson’s disease, Huntington’s disease, Wilson’s disease, or Multi-infarct dementia), the primary issue is **retrieval failure** rather than an inability to encode new information. Patients often benefit from cues or recognition tasks, unlike cortical dementia (e.g., Alzheimer’s), where there is a failure of storage/encoding. Other hallmark features of subcortical dementia include **psychomotor slowing (bradyphrenia)**, executive dysfunction, and personality changes (apathy/depression). **Why the other options are incorrect:** * **B, C, and D (Aphasia, Dyslexia, Tactile Agnosia):** These are considered **"Cortical Signs."** They represent the "4 As" (Amnesia, Aphasia, Apraxia, Agnosia) typically seen in cortical dementias like Alzheimer’s Disease. * **Aphasia:** Language impairment due to cortical damage (Broca’s/Wernicke’s areas). * **Dyslexia:** Difficulty reading, often linked to the parietal-temporal cortex. * **Tactile Agnosia:** Inability to recognize objects by touch, indicating parietal lobe dysfunction. **High-Yield NEET-PG Pearls:** * **Cortical Dementia:** Alzheimer’s, Pick’s Disease. Features: Early aphasia, agnosia, and severe memory storage loss. * **Subcortical Dementia:** Parkinson’s, Huntington’s, Progressive Supranuclear Palsy (PSP). Features: "Forgetfulness" (retrieval issue), slowed thinking, and prominent motor symptoms. * **Key Differentiator:** If a question mentions "aphasia" or "apraxia," think **Cortical**. If it mentions "psychomotor slowing" or "movement disorders," think **Subcortical**.

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: A chronic alcoholic blames the family environment as a cause of his alcoholism. This is an example of which psychological defense mechanism?

Rationalization. ### Explanation **Correct Answer: C. Rationalization** **Why Rationalization is Correct:** Rationalization is a defense mechanism where an individual justifies logically inconsistent or unacceptable behavior by formulating "socially acceptable" or logical reasons for it. In this case, the patient is providing a plausible-sounding excuse (family environment) to justify his maladaptive behavior (alcoholism) and avoid the true internal conflict or guilt associated with his addiction. It is essentially a way of "making excuses" to protect the ego from self-blame. **Analysis of Incorrect Options:** * **A. Projection:** This involves attributing one’s own unacknowledged feelings or impulses to others. If the patient said, "My family members are the ones who are actually alcoholics/addicts," it would be projection. * **B. Denial:** This is the refusal to accept reality or facts. If the patient claimed, "I don't have a drinking problem at all," despite clear evidence of liver damage or social dysfunction, it would be denial. * **D. Sublimation:** This is a mature defense mechanism where socially unacceptable impulses are transformed into socially acceptable actions (e.g., an aggressive person becoming a professional boxer). **NEET-PG Clinical Pearls:** * **Rationalization vs. Intellectualization:** While rationalization uses excuses to justify behavior, intellectualization uses abstract, clinical, or academic logic to avoid the emotional component of a situation. * **Alcoholism & Defense Mechanisms:** Denial is considered the most common defense mechanism in substance use disorders, but **Rationalization** and **Projection** (the "Alcoholic Trio") are frequently tested in clinical scenarios. * **Mature Defense Mechanisms (High Yield):** Remember the mnemonic **SASH**—Sublimation, Altruism, Suppression, and Humor. These are the only "healthy" defenses.

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: Formed visual hallucinations are seen in a lesion of which lobe?

Temporal lobe. ### Explanation The nature of a visual hallucination is a critical localizing sign in neuro-psychiatry. The correct answer is **Temporal lobe**. **1. Why Temporal Lobe is Correct:** Visual hallucinations are categorized into two types based on complexity: * **Formed (Complex) Hallucinations:** These consist of recognizable objects, people, animals, or scenes. They are characteristic of lesions or seizures involving the **temporal lobe** or the visual association cortex. This is because the temporal lobe processes high-level visual integration and memory. * **Unformed (Simple) Hallucinations:** These consist of flashes of light, colors, or geometric shapes (photopsia). These are characteristic of **occipital lobe** lesions (primary visual cortex). **2. Analysis of Incorrect Options:** * **Frontal Lobe:** Lesions here typically present with executive dysfunction, personality changes (disinhibition or apathy), and motor deficits, rather than primary sensory hallucinations. * **Occipital Lobe:** As noted above, occipital lesions cause **unformed/simple** visual hallucinations. * **Arcuate Fasciculus:** This is a white matter tract connecting Broca’s and Wernicke’s areas. A lesion here results in **Conduction Aphasia** (characterized by impaired repetition), not hallucinations. **3. NEET-PG High-Yield Pearls:** * **Charles Bonnet Syndrome:** Complex visual hallucinations in elderly patients with significant visual impairment (e.g., macular degeneration) despite no psychiatric illness. * **Alice in Wonderland Syndrome (Micropsia/Macropsia):** Often associated with temporal lobe epilepsy or migraines. * **Parietal Lobe Lesions:** Typically lead to visuospatial neglect or agnosias (e.g., Gerstmann syndrome) rather than formed hallucinations. * **Hypnagogic/Hypnopompic Hallucinations:** Seen in Narcolepsy; these occur while falling asleep or waking up, respectively.

Q: Perception without stimuli is:

Hallucination. **Explanation:** The core of this question lies in distinguishing between different disorders of thought and perception. **1. Why Hallucination is Correct:** A **hallucination** is defined as a false sensory perception in the **absence of an external stimulus**. It has the vividness and impact of a real perception and occurs in external objective space (unlike imagery). It can involve any sensory modality (auditory, visual, olfactory, gustatory, or tactile). **2. Why the Other Options are Incorrect:** * **Delusion (Option A):** This is a disorder of **thought content**, not perception. It is defined as a fixed, false belief that is out of keeping with the patient’s social, cultural, and educational background and cannot be corrected by logical reasoning. * **Illusion (Option B):** This is a **misinterpretation** of a real external stimulus (e.g., mistaking a rope for a snake in the dark). Unlike hallucinations, an external stimulus is present. * **Delirium (Option C):** This is an acute, transient, global disorder of **consciousness and cognition** characterized by fluctuating levels of awareness, disorientation, and often accompanied by visual hallucinations. **Clinical Pearls for NEET-PG:** * **Most common hallucination in Schizophrenia:** Auditory (specifically third-person). * **Most common hallucination in Organic Brain Syndromes:** Visual. * **Hypnagogic vs. Hypnopompic:** Hallucinations occurring while falling asleep vs. waking up (seen in Narcolepsy). * **Formication:** A tactile hallucination feeling like insects crawling under the skin (common in Cocaine withdrawal and Delirium Tremens). * **Pseudo-hallucinations:** Occur in internal subjective space (inside the mind) and the patient often retains insight into their unreality.

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.

Question 1

A person experiencing multiple distinct personalities is most likely suffering from which of the following conditions?

Accepted Answer

Dissociative disorder

Answer

Mania

Answer

Personality disorder

Answer

Paranoid schizophrenia

Question 2

What is a characteristic feature of subcortical dementia?

Accepted Answer

Memory loss

Answer

Aphasia

Answer

Dyslexia

Answer

Tactile agnosia

Question 3

All of the following are true for conversion disorder except?

Accepted Answer

Onset in late age

Answer

Secondary gain

Answer

Patient does not consciously produce symptoms

Answer

Relation with stress

Question 4

All of the following are impulse control disorders except?

Accepted Answer

Capgras syndrome

Answer

Pyromania

Answer

Trichotillomania

Answer

Kleptomania

Question 5

A chronic alcoholic blames the family environment as a cause of his alcoholism. This is an example of which psychological defense mechanism?

Accepted Answer

Rationalization

Answer

Projection

Answer

Denial

Answer

Sublimation

Question 6

Delusion is a disorder of:

Accepted Answer

Thinking

Answer

Memory

Answer

Perception

Answer

Learning

Question 7

Formed visual hallucinations are seen in a lesion of which lobe?

Accepted Answer

Temporal lobe

Answer

Frontal lobe

Answer

Occipital lobe

Answer

Arcuate fasciculus

Question 8

When assessing a patient’s needs for psychologic support after the patient has been diagnosed with stage I cancer of the colon, which question by the nurse will provide the most information?

Accepted Answer

Can you tell me what has been helpful to you in the past when coping with stressful events?

Answer

How long ago were you diagnosed with this cancer?

Answer

Are you familiar with the stages of emotional adjustment to a diagnosis like cancer of the colon?

Answer

How do you feel about having a possibly terminal illness?

Question 9

Perception without stimuli is:

Accepted Answer

Hallucination

Answer

Delusion

Answer

Illusion

Answer

Delirium

Question 10

Confabulation is a defect of?

Accepted Answer

Memory

Answer

Intelligence

Answer

Attention

Answer

Concentration

Psychiatric Assessment and Diagnosis — MCQs

Psychiatric Assessment and Diagnosis — MCQs

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