Geriatric Psychiatry Practice Questions

Q: Which of the following is not used in the management of delirium?

Lithium. ### Explanation **Delirium** is an acute, fluctuating syndrome of altered consciousness and cognitive dysfunction, usually secondary to an underlying medical condition. The primary management involves treating the underlying cause and managing behavioral symptoms. **Why Lithium is the Correct Answer:** **Lithium** is a mood stabilizer used primarily for Bipolar Disorder. It is **not** used in delirium for several reasons: 1. **Neurotoxicity:** Lithium has a narrow therapeutic index and can worsen confusion or cause "Lithium-induced delirium." 2. **Renal/Electrolyte Sensitivity:** Delirious patients are often dehydrated or have electrolyte imbalances, which significantly increases the risk of Lithium toxicity. 3. **Onset:** It takes days to reach a steady state, making it useless for acute behavioral emergencies. **Analysis of Other Options:** * **Haloperidol (Option A):** The traditional **drug of choice** for delirium. It has minimal respiratory depression and few anticholinergic side effects, making it safe for elderly or medically ill patients. * **Diazepam (Option B):** While benzodiazepines can worsen delirium in most cases (due to paradoxical agitation), they are the **first-line treatment for delirium tremens** (Alcohol Withdrawal Delirium) and sedative-hypnotic withdrawal. * **Olanzapine (Option D):** An atypical antipsychotic often used as an alternative to Haloperidol. It is effective for agitation and has a lower risk of Extrapyramidal Symptoms (EPS). **High-Yield Clinical Pearls for NEET-PG:** * **DOC for Delirium:** Haloperidol (low dose). * **DOC for Alcohol Withdrawal Delirium:** Benzodiazepines (e.g., Diazepam, Lorazepam). * **Avoid:** Drugs with strong anticholinergic properties (e.g., Chlorpromazine, Amitriptyline) as they worsen delirium. * **Non-pharmacological management:** Reorientation, adequate lighting, and correcting sleep-wake cycles are essential first steps.

Q: Which of the following is a preventable risk factor for dementia?

Hypertension. **Explanation:** The prevention of dementia is a high-yield topic in geriatric psychiatry. According to the **Lancet Commission on Dementia Prevention**, approximately 40% of dementia cases are attributable to 12 modifiable risk factors. **Why Hypertension is correct:** Mid-life **hypertension** (typically defined as systolic BP ≥140 mmHg) is a major **preventable** risk factor. Chronic high blood pressure leads to cerebrovascular damage, white matter lesions, and microinfarcts, which contribute significantly to both Vascular Dementia and Alzheimer’s Disease. Controlling BP with antihypertensives is proven to reduce the risk of cognitive decline. **Analysis of Incorrect Options:** * **B. Apolipoprotein E4 (ApoE4):** This is a genetic risk factor. While it significantly increases the risk of late-onset Alzheimer’s, it is **non-modifiable**. * **C. Advanced age:** This is the **strongest non-modifiable risk factor** for dementia. The prevalence of dementia doubles every five years after the age of 65. * **D. Lowered homocysteine levels:** High levels of homocysteine (Hyperhomocysteinemia) are associated with increased dementia risk. Therefore, *lowered* levels would be considered protective, not a risk factor. **NEET-PG High-Yield Pearls:** * **Most common cause of dementia:** Alzheimer’s Disease. * **Most common preventable risk factor:** Mid-life hypertension and hearing loss (hearing loss is often cited as the single largest modifiable risk factor in mid-life). * **Other modifiable factors:** Diabetes, obesity, smoking, depression, physical inactivity, and low education levels. * **Protective factors:** High education, physical exercise, and "cognitive reserve."

Q: Vascular dementia is characterized by which of the following?

Memory deficits. **Explanation:** **Vascular Dementia (VaD)** is the second most common cause of dementia after Alzheimer’s disease. According to the **ICD-10 and DSM-5 criteria**, the core clinical feature required for a diagnosis of any dementia, including vascular dementia, is the presence of **memory deficits** along with impairment in at least one other cognitive domain (aphasia, apraxia, agnosia, or executive functioning) that interferes with daily life. * **Why Memory Deficits is Correct:** While VaD often presents with prominent executive dysfunction (due to subcortical involvement), memory impairment remains a fundamental diagnostic requirement. It typically follows a "step-wise" decline resulting from multiple cerebrovascular accidents (infarcts). * **Why other options are incorrect:** * **Disorientation:** While it occurs as dementia progresses, it is a non-specific feature and not the primary diagnostic hallmark. * **Emotional lability:** Also known as "pseudobulbar affect," this is common in VaD due to frontal-subcortical disruption, but it is a supportive clinical sign rather than a defining diagnostic criterion. * **Visual hallucinations:** These are highly characteristic of **Lewy Body Dementia (LBD)** and are not a primary feature of vascular dementia. **High-Yield Clinical Pearls for NEET-PG:** * **Hachinski Ischemic Score:** A score >7 suggests Vascular Dementia; <4 suggests Alzheimer’s. * **Key Presentation:** Step-wise deterioration, focal neurological deficits (e.g., hemiparesis, gait changes), and "patchy" cognitive deficits. * **Risk Factors:** Hypertension (most significant), diabetes, and smoking. * **Neuroimaging:** MRI typically shows multiple infarcts or extensive white matter hyperintensities (leukoaraiosis).

Q: Which of the following is true about pseudodementia?

Seen in patients with depression. **Explanation:** **Pseudodementia** (also known as the **Dementia of Depression**) refers to a clinical syndrome where patients with severe depressive disorders present with cognitive deficits that mimic true organic dementia. **Why Option B is Correct:** In elderly patients, depression often manifests with prominent cognitive impairment, such as memory loss, poor concentration, and psychomotor slowing. Unlike true dementia, these deficits are **functional and reversible** with appropriate antidepressant treatment. The underlying medical concept is that the patient’s lack of motivation and "psychomotor retardation" lead to poor performance on cognitive tasks, rather than a structural neurodegenerative process. **Why Other Options are Incorrect:** * **Options A & C:** Pseudodementia is not a type of cortical (e.g., Alzheimer’s) or subcortical (e.g., Parkinson’s) dementia. These are irreversible, progressive organic conditions, whereas pseudodementia is a psychiatric condition. * **Option D:** It is not secondary to an organic condition (like Vitamin B12 deficiency or hypothyroidism). It is a functional impairment secondary to a primary mood disorder. **High-Yield Clinical Pearls for NEET-PG:** To differentiate Pseudodementia from True Dementia (Alzheimer’s), remember these key features: 1. **Onset:** Sudden/Abrupt in pseudodementia; Insidious/Slow in true dementia. 2. **Effort:** Patients with pseudodementia often give **"I don't know"** answers and make little effort. Patients with true dementia often give "near-miss" answers (confabulation) and try hard to compensate. 3. **Awareness:** Patients with pseudodementia are usually distressed by their memory loss and complain loudly about it. In true dementia, patients often have **anosognosia** (lack of insight) and minimize their deficits. 4. **Diurnal Variation:** Cognitive symptoms in pseudodementia may fluctuate with the severity of the depressive mood.

Q: Delirium and schizophrenia differ from each other by:

Clouding of consciousness. **Explanation:** The fundamental distinction between **Delirium** and **Schizophrenia** lies in the **sensorium and level of consciousness**. **1. Why "Clouding of Consciousness" is correct:** Delirium is an acute organic brain syndrome characterized by a **fluctuating level of consciousness** and impaired attention. "Clouding of consciousness" refers to the patient's inability to respond normally to environmental stimuli, often manifesting as disorientation to time, place, and person. In contrast, Schizophrenia is a functional psychotic disorder where the **sensorium remains clear**; patients are typically alert and oriented, even while experiencing active hallucinations or delusions. **2. Why other options are incorrect:** * **Change in mood:** Both conditions can present with mood disturbances. A patient with delirium may show irritability or fear, while a patient with schizophrenia may exhibit blunted affect, depression, or inappropriate emotional responses. Thus, this does not differentiate the two. * **Tangential thinking:** This is a formal thought disorder. While more characteristic of the disorganized thinking in Schizophrenia, it can also occur in Delirium due to the patient's inability to maintain a coherent stream of thought (disorganized speech). * **All of the above:** Since mood and thought disturbances overlap, only the state of consciousness serves as the pathognomonic differentiator. **High-Yield Clinical Pearls for NEET-PG:** * **Delirium:** Acute onset, fluctuating course, reversible, and usually due to an underlying medical condition (e.g., infections, metabolic imbalance). Visual hallucinations are more common. * **Schizophrenia:** Chronic course (>6 months), stable consciousness, and primarily auditory hallucinations. * **Memory Tip:** If the question mentions "disorientation" or "fluctuating attention," think **Delirium**. If the patient is "oriented but delusional," think **Schizophrenia**.

Q: Which of the following psychiatric disorders is most commonly associated with stroke?

Schizophrenia. ### Explanation **Correct Option: B. Depression** *(Note: There appears to be a discrepancy in the provided key. In clinical psychiatry and standard medical literature, **Depression** is the most common psychiatric complication following a stroke, not Schizophrenia.)* **Why Depression is the Correct Answer:** Post-stroke depression (PSD) affects approximately **30-35%** of stroke survivors. The underlying medical concept involves both biological and psychosocial factors: 1. **Biological:** Ischemic damage to the prefrontal cortex, basal ganglia, and disruption of amine pathways (serotonin and norepinephrine) leads to mood dysregulation. 2. **Psychosocial:** The sudden loss of autonomy, physical disability, and cognitive impairment contribute to reactive depression. **Analysis of Incorrect Options:** * **A. Mania:** Post-stroke mania is rare and usually associated with lesions in the **right hemisphere** (specifically the orbitofrontal cortex or basotemporal cortex). * **C. Bipolar Disorder:** While mood swings occur, a full-blown bipolar diathesis is less common than unipolar depression post-stroke. * **D. Schizophrenia:** Psychotic symptoms are relatively rare after a stroke. While "Post-stroke Psychosis" exists (often linked to right parietal lesions), it does not reach the prevalence of depression. **NEET-PG High-Yield Pearls:** * **Most common psychiatric sequela of stroke:** Depression. * **Anatomical Correlation:** Left frontal lobe and left basal ganglia lesions are most strongly associated with the severity of post-stroke depression. * **Treatment:** SSRIs (like Sertraline or Escitalopram) are the first-line treatment and have been shown to improve both mood and functional recovery. * **Pseudobulbar Affect:** Another common post-stroke condition characterized by involuntary laughing or crying, often confused with depression.

Q: What clinical feature best differentiates delirium from dementia?

Altered sensorium. **Explanation:** The hallmark feature that differentiates **Delirium** from **Dementia** is the state of consciousness, specifically an **altered sensorium** (clouding of consciousness). 1. **Why "Altered Sensorium" is correct:** Delirium is an acute neuropsychiatric syndrome characterized by a **fluctuating level of consciousness** and impaired attention. In contrast, patients with Dementia are typically "alert but confused"—their level of consciousness remains stable and clear until the very late stages of the disease. 2. **Analysis of Incorrect Options:** * **A. Loss of memory:** This is a core feature of both conditions. While memory loss is the primary symptom of dementia, it also occurs in delirium due to impaired registration and inattention. * **B. Apraxia:** This refers to the inability to perform learned purposeful movements. It is a cortical sign commonly seen in chronic neurodegenerative conditions like Alzheimer’s Dementia but is not a defining feature of delirium. * **C. Delusion:** Psychotic symptoms like delusions and hallucinations can occur in both delirium (often fleeting and fragmented) and dementia (e.g., delusions of theft in Alzheimer’s). Therefore, they are not pathognomonic for differentiation. **NEET-PG High-Yield Pearls:** * **Onset:** Delirium is **acute** (hours to days); Dementia is **insidious/chronic** (months to years). * **Reversibility:** Delirium is usually reversible (secondary to medical illness/toxicity); Dementia is typically progressive and irreversible. * **Attention:** Impaired attention is the "cardinal" sign of delirium. If a patient cannot name the months of the year backward, suspect delirium. * **EEG:** Delirium typically shows **generalized slowing** (except in alcohol withdrawal/DTs); the EEG in dementia is usually normal for the patient's age.

Q: A 68-year-old male presents with a 6-month history of increasing forgetfulness, difficulty organizing finances and paying bills, social withdrawal, and recent inappropriate behavior towards a neighbor. His wife reports these changes are uncharacteristic. He has a history of hypertension and type 2 diabetes mellitus, and a family history of Alzheimer disease. His Mini-Mental State Examination (MMSE) score is 23. What is the most likely diagnosis?

Frontotemporal dementia. ### Explanation **Correct Answer: D. Frontotemporal Dementia (FTD)** The clinical presentation highlights a significant shift in **personality and social conduct** (inappropriate behavior, social withdrawal) alongside executive dysfunction (difficulty organizing finances), which are the hallmarks of the **behavioral variant of Frontotemporal Dementia (bvFTD)**. In FTD, behavioral changes and executive deficits often precede significant memory loss. The patient's "uncharacteristic" inappropriate behavior toward a neighbor indicates **loss of social inhibition**, a classic diagnostic feature. While the MMSE score (23) indicates cognitive impairment, the focal involvement of the frontal lobes explains the early decline in social cognition and executive function. **Why incorrect options are wrong:** * **A. Alzheimer Disease:** Typically presents with **early episodic memory loss** (forgetting recent events). While this patient has forgetfulness, the prominent early personality changes and social disinhibition point more strongly toward FTD. * **B. Creutzfeldt-Jakob Disease:** Characterized by **rapidly progressive** dementia (weeks to months) usually accompanied by myoclonus and ataxia. A 6-month course with primary behavioral symptoms is less typical. * **C. Dementia with Lewy Bodies (DLB):** Requires the presence of **visual hallucinations**, parkinsonism, and fluctuating levels of consciousness. None of these are present here. **High-Yield Clinical Pearls for NEET-PG:** * **FTD vs. Alzheimer’s:** FTD occurs at a younger age (typically 45–65) and presents with "Personality first, Memory later." Alzheimer’s is "Memory first, Personality later." * **Pick’s Disease:** A subtype of FTD characterized histologically by **Pick bodies** (silver-staining tau inclusions) and **Knife-edge atrophy** of the frontal and temporal lobes. * **Neuroimaging:** Look for selective atrophy of the frontal and anterior temporal lobes on MRI.

Question 1

Which of the following is not used in the management of delirium?

Accepted Answer

Lithium

Answer

Haloperidol

Answer

Diazepam

Answer

Olanzapine

Question 2

Which of the following is a preventable risk factor for dementia?

Accepted Answer

Hypertension

Answer

Apolipoprotein E4

Answer

Advanced age

Answer

Lowered homocysteine levels

Question 3

Vascular dementia is characterized by which of the following?

Accepted Answer

Memory deficits

Answer

Disorientation

Answer

Emotional lability

Answer

Visual hallucinations

Question 4

Which of the following is true about pseudodementia?

Accepted Answer

Seen in patients with depression

Answer

A form of cortical dementia

Answer

A form of subcortical dementia

Answer

Dementia secondary to an organic condition

Question 5

Delirium and schizophrenia differ from each other by:

Accepted Answer

Clouding of consciousness

Answer

Change in mood

Answer

Tangential thinking

Answer

All of the above

Question 6

True about dementia is:

Accepted Answer

Dementia is the loss of distant memory.

Answer

Alzheimer's disease is due to multiple small strokes in the cerebral cortex.

Answer

Dementia due to atherosclerosis does not progress like Alzheimer's.

Answer

Alzheimer's disease is associated with an increase in acetylcholine release in the cerebral cortex.

Question 7

Which of the following psychiatric disorders is most commonly associated with stroke?

Accepted Answer

Schizophrenia

Answer

Mania

Answer

Depression

Answer

Bipolar disorder

Question 8

A 70-year-old male utters the same answers to all questions. He is suffering from which of the following conditions?

Accepted Answer

Organic brain disease

Answer

Mania

Answer

Schizophrenia

Answer

Convulsions

Question 9

What clinical feature best differentiates delirium from dementia?

Accepted Answer

Altered sensorium

Answer

Loss of memory

Answer

Apraxia

Answer

Delusion

Question 10

A 68-year-old male presents with a 6-month history of increasing forgetfulness, difficulty organizing finances and paying bills, social withdrawal, and recent inappropriate behavior towards a neighbor. His wife reports these changes are uncharacteristic. He has a history of hypertension and type 2 diabetes mellitus, and a family history of Alzheimer disease. His Mini-Mental State Examination (MMSE) score is 23. What is the most likely diagnosis?

Accepted Answer

Frontotemporal dementia

Answer

Alzheimer disease

Answer

Creutzfeldt-Jakob disease

Answer

Dementia with Lewy bodies

Geriatric Psychiatry — MCQs

Geriatric Psychiatry — MCQs

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