Consultation-Liaison Psychiatry — MCQs

Q: Depression is most commonly seen in patients suffering from which of the following cancers?

Pancreatic cancer. **Explanation:** The association between **Pancreatic Cancer** and **Depression** is a classic high-yield concept in Consultation-Liaison Psychiatry. **Why Pancreatic Cancer is the Correct Answer:** Pancreatic cancer has the highest prevalence of depression among all malignancies (estimated between 30-50%). Crucially, depression in these patients often presents as a **prodromal symptom**, appearing months before the physical diagnosis of the tumor. The underlying mechanism is believed to be **paraneoplastic** in nature, involving the release of pro-inflammatory cytokines (like IL-6 and TNF-alpha) and alterations in the kynurenine pathway, which depletes serotonin levels even before significant tumor burden or cachexia occurs. **Analysis of Incorrect Options:** * **A. Brain Cancer:** While brain tumors (especially frontal lobe lesions) can cause personality changes and mood symptoms, the statistical prevalence of clinical depression is lower than in pancreatic cancer. * **C. Lung Cancer:** Depression is common in lung cancer due to high symptom burden and smoking-related comorbidities, but it typically follows the diagnosis rather than preceding it as a biological prodrome. * **D. Kidney Cancer:** While chronic illness increases the risk of adjustment disorders, there is no specific biological or statistical link making it the "most common" compared to pancreatic malignancy. **NEET-PG High-Yield Pearls:** * **Prodromal Depression:** If an elderly patient presents with new-onset depression and unexplained weight loss, always screen for occult pancreatic malignancy. * **Cytokine Theory:** Depression in cancer is not just a psychological reaction; it is often a biological manifestation of systemic inflammation. * **Treatment:** SSRIs remain the first-line treatment, but Mirtazapine is often preferred in cancer patients to help with insomnia and appetite stimulation.

Q: Which of the following psychiatric illnesses is common in a patient with stroke?

Depression. **Explanation:** **Post-Stroke Depression (PSD)** is the most common neuropsychiatric complication following a stroke, affecting approximately **30% to 35%** of survivors. 1. **Why Depression is Correct:** The etiology of PSD is multifactorial, involving both **biological factors** (disruption of amine pathways, particularly serotonin and norepinephrine, due to ischemic injury) and **psychosocial factors** (reaction to new physical disability and loss of independence). Studies indicate that lesions in the **left frontal cortex** and **left basal ganglia** are more strongly associated with the development of severe depression. 2. **Why Other Options are Incorrect:** * **Schizophrenia:** This is a primary psychotic disorder with a typical onset in late adolescence or early adulthood. While "post-stroke psychosis" can occur, it is rare compared to mood disorders. * **Bipolar Disorder:** Post-stroke mania is significantly less common than depression and is usually associated with lesions in the **right hemisphere** (specifically the temporal or orbitofrontal cortex). * **Psychosis:** While strokes can cause hallucinations or delusions (organic psychosis), the prevalence is low (approx. 4-5%) compared to the high incidence of depressive symptoms. **High-Yield Clinical Pearls for NEET-PG:** * **Treatment:** SSRIs (e.g., Sertraline, Fluoxetine) are the first-line treatment for PSD and have been shown to improve both mood and motor recovery. * **Location Correlation:** Left-sided lesions (Frontal) → Depression; Right-sided lesions → Mania/Indifference. * **Differential:** Always rule out **Vascular Dementia** if cognitive decline is prominent alongside mood changes.

Q: Consultation-Liaison psychiatry involves diagnosing which of the following?

Psychiatric illness in medically ill patients. **Explanation:** **Consultation-Liaison (C-L) Psychiatry**, also known as Psychosomatic Medicine, is a specialized sub-discipline that serves as the bridge between psychiatry and other medical/surgical specialties. **1. Why Option A is Correct:** The primary role of a C-L psychiatrist is to diagnose and manage **psychiatric illnesses occurring in patients hospitalized for medical, surgical, or obstetric conditions**. These patients are often in general hospital wards (e.g., ICU, Oncology, or Cardiology) where their physical illness either triggers, exacerbates, or coexists with a mental disorder (such as Delirium, Depression due to chronic illness, or Adjustment Disorder). **2. Why the Other Options are Incorrect:** * **Option B:** While psychiatrists must be aware of physical health, the primary focus of the *C-L service* is the psychiatric complication of the medical patient, not the primary medical diagnosis of a psychiatric inpatient. * **Options C & D:** While assessing suicidality is a critical skill in psychiatry, it is a specific clinical task rather than the defining scope of the C-L specialty. C-L psychiatry covers a much broader range of conditions, including delirium, capacity assessments, and somatoform disorders. **High-Yield Clinical Pearls for NEET-PG:** * **Most Common Referral:** The most frequent reason for a C-L consultation in a general hospital is **Delirium** (Acute Confusional State). * **Common Scenarios:** Managing post-MI depression, neuropsychiatric symptoms in SLE, or psychological distress in terminal cancer patients. * **Key Function:** It involves two components—**Consultation** (providing expert opinion on a specific patient) and **Liaison** (improving the communication and mental health skills of the non-psychiatric medical staff).

Q: A 60-year-old man had undergone cardiac bypass surgery 2 days back. Now he started forgetting things and was not able to recall names and phone numbers of his relatives. What is the probable diagnosis?

Delirium. ***Delirium*** - The **acute onset** of memory loss and confusion **2 days after cardiac bypass surgery** is characteristic of **postoperative delirium**. - Delirium is a disturbance in **attention**, **awareness**, and **cognition** that develops over a short period (hours to days) and is directly related to a medical condition or procedure. - **Cardiac surgery** is a well-known risk factor, with delirium occurring in **10-50%** of cardiac bypass patients due to factors like anesthesia, hypoperfusion, inflammation, and physiological stress. - Key features here: **acute onset**, **temporal relationship to surgery**, and **memory/cognitive deficits** without psychotic symptoms. *Alzheimer's disease* - Alzheimer's is a **chronic, progressive neurodegenerative disorder** with **gradual onset** over months to years. - The **sudden appearance** of symptoms immediately after surgery cannot be explained by Alzheimer's disease. - While Alzheimer's causes memory impairment, it does not present acutely in the postoperative setting. *Depression* - Depression can cause **pseudodementia** with cognitive complaints, but the primary features would be **persistent low mood**, **anhedonia**, **sleep disturbance**, and **appetite changes**. - The **acute temporal link** to surgery and absence of mood symptoms make depression unlikely. - Cognitive symptoms in depression are typically subjective complaints rather than objective deficits. *Post-traumatic psychosis* - This would involve **psychotic symptoms** such as **hallucinations**, **delusions**, or **disorganized behavior**, which are not described in this case. - The presentation of simple **memory deficits** without psychotic features does not support this diagnosis. - Surgery itself is not typically considered a psychologically traumatic event that would trigger psychosis.

Q: A 68-year-old man who was a diagnosed case of HIV infection for last 12 years was brought to outpatient department for evaluation. His wife reports that for last 6 months she has been noticing changes in his behaviour. She further added that 'He appears uninterested and doesn't seem to care about anything. I haven't seen him crying or saying something negative, but may be he is getting depressed. He is also having difficulty remembering things ' The patient has been irregular with his HIV medications. His last CD4+ cell count, measured 5 months ago, was 210/mm3. While walking , patient was observed to have subtle jerking movements. Which of the following is the likely diagnosis?

HIV-associated dementia. ***HIV-associated dementia*** - The patient's **HIV infection for 12 years**, **low CD4+ count (210/mm3)**, **behavioral changes (apathy, memory difficulties)**, and **subtle jerking movements** are all classic features of HIV-associated dementia (HAD). - HAD is a **subcortical dementia** that presents with cognitive slowing, motor dysfunction, and behavioral changes, often seen in advanced HIV disease. *Alzheimer's disease* - While Alzheimer's involves memory loss and behavioral changes, the patient's **long-standing HIV infection with a low CD4+ count** and **motor symptoms (jerking movements)** make HAD a more direct and likely diagnosis. - Alzheimer's typically presents with more prominent **cortical deficits** like aphasia and apraxia, which are not described here, and is not directly linked to HIV status. *Major depressive disorder* - The patient exhibits **apathy and lack of interest**, which can be symptoms of depression. However, the presence of **memory difficulties, jerking movements**, and a **low CD4+ count** points towards an organic brain pathology rather than solely a mood disorder. - While depression can coexist with HIV, it does not explain the **neurological and motor symptoms** observed. *Delirium* - **Delirium** is characterized by an **acute onset of fluctuating attention and cognition**, often with altered consciousness, and typically has a clear underlying medical cause. - The described symptoms are more insidious (over 6 months), chronic, and progressive rather than acute and fluctuating, making delirium less likely.

Q: What does Consultation-liaison (C-L) psychiatry involve?

Psychiatric illness in medically ill. ***Psychiatric illness in medically ill*** - Consultation-liaison (C-L) psychiatry focuses on the **diagnosis** and **management** of mental health conditions that arise in individuals with co-occurring medical illnesses. - It involves close collaboration between psychiatrists and other medical teams to address the psychological impact of physical disease and optimize overall patient care. - This is the **core definition** of C-L psychiatry—psychiatric complications in the context of primary medical illness. *Suicidal tendency in psychiatric patients* - While suicide risk assessment is a crucial part of general psychiatry, this option is too broad as it doesn't emphasize the unique context of C-L psychiatry. - C-L psychiatry specifically addresses psychiatric issues in the context of patients with existing **medical conditions**, not general psychiatric patients. *Suicidal tendency in medically ill* - This is a significant aspect of C-L psychiatry, as medically ill patients may experience **depression** and **distress** leading to suicidal ideation. - However, C-L psychiatry encompasses a **broader range** of psychiatric illnesses in medically ill patients, not just suicidal tendencies—this option is too narrow. *Medical illness of psychiatric patients* - This describes a situation where a patient with a primary psychiatric diagnosis develops a medical illness, which is the **reverse** of the typical C-L psychiatry focus. - While this bidirectional care is also relevant, the core concept of C-L psychiatry is addressing **psychiatric complications** that emerge in the context of a primary medical illness in medical/surgical settings.

Q: Insane paresis is associated with -

Syphilis. ***Syphilis*** - **General paresis**, or "insane paresis," is a neuropsychiatric manifestation of **tertiary syphilis**, resulting from chronic meningoencephalitis. - It presents with progressive **dementia**, personality changes, delusions, and neurological deficits. *Leishmaniasis* - This parasitic disease is characterized by various forms including **cutaneous**, **mucocutaneous**, and **visceral leishmaniasis** (kala-azar). - It typically causes skin lesions, mucocutaneous destruction, or systemic symptoms like fever, hepatosplenomegaly, and pancytopenia, but not general paresis. *Yellow fever* - **Yellow fever** is a viral hemorrhagic disease transmitted by mosquitoes, primarily affecting the liver and kidneys. - Symptoms include fever, jaundice, hemorrhage, and shock, but not the neurological degeneration seen in general paresis. *Neisseria meningitidis* - This bacterium causes **meningococcal meningitis** and **meningococcemia**, which are acute and severe infectious diseases. - While it can lead to acute neurological symptoms due to meningitis, it does not cause the chronic, progressive neuropsychiatric syndrome known as general paresis.

Q: A patient with pneumonia for 5 days is admitted to the hospital with altered sensorium. He suddenly stops recognizing the doctor and staff, believes he is in jail, and complains of scorpions attacking him. His probable diagnosis is:

Acute delirium. ***Acute delirium*** - The sudden onset of altered **sensorium**, **disorientation** (not recognizing staff), and **hallucinations** (scorpions, being in jail) in a patient with a medical illness (pneumonia) is a classic presentation of **acute delirium**. - Delirium is characterized by an **acute disturbance in attention and cognition**, often fluctuating, and is commonly triggered by underlying medical conditions, infections, or medications. *Acute dementia* - **Dementia** is a chronic, progressive decline in cognitive function, not an acute or fluctuating state. - While dementia can involve cognitive impairment, it rarely presents with such sudden, vivid hallucinations and marked fluctuations in attention as seen here. *Acute schizophrenia* - **Schizophrenia** is a chronic psychotic disorder characterized by persistent delusions, hallucinations, and disorganized thought, typically with an onset in late adolescence or early adulthood. - The acute onset and clear precipitating factor (pneumonia) in an older adult (implied by pneumonia severity) make schizophrenia less likely; its symptoms are usually not as directly attributable to a physical illness. *Acute paranoia* - **Paranoia** involves irrational and persistent mistrust or suspicion of others, often with persecutory delusions but without the global cognitive impairment, disorientation, or vivid visual/tactile hallucinations described. - While the patient's belief of being in jail could be considered a delusion, the broader constellation of symptoms points strongly to a more widespread cognitive dysfunction indicative of delirium.

A 68-year-old man who was a diagnosed case of HIV infection for last 12 years was brought to outpatient department for evaluation. His wife reports that for last 6 months she has been noticing changes in his behaviour. She further added that 'He appears uninterested and doesn't seem to care about anything. I haven't seen him crying or saying something negative, but may be he is getting depressed. He is also having difficulty remembering things ' The patient has been irregular with his HIV medications. His last CD4+ cell count, measured 5 months ago, was 210/mm3. While walking , patient was observed to have subtle jerking movements. Which of the following is the likely diagnosis?

What does Consultation-liaison (C-L) psychiatry involve?

Insane paresis is associated with -

Q10

A patient with pneumonia for 5 days is admitted to the hospital with altered sensorium. He suddenly stops recognizing the doctor and staff, believes he is in jail, and complains of scorpions attacking him. His probable diagnosis is:

Consultation-Liaison Psychiatry Indian Medical PG Practice Questions and MCQs

Question 1: Which class of medications is known to worsen the symptoms of delirium in patients post-cardiac surgery?

A. Antipsychotics
B. Anticholinergics (Correct Answer)
C. Benzodiazepines (BZD)
D. Antihistamines

Explanation: **Explanation:** **1. Why Anticholinergics are the Correct Answer:** Delirium is fundamentally characterized by a neurochemical imbalance, most notably a **cholinergic deficiency** and a dopaminergic excess. Medications with anticholinergic properties (e.g., atropine, scopolamine, or certain tricyclic antidepressants) block acetylcholine receptors in the brain, directly precipitating or severely worsening the symptoms of delirium (confusion, disorientation, and cognitive impairment). In post-cardiac surgery patients, the brain is already vulnerable due to systemic inflammation and micro-emboli; adding an anticholinergic agent further destabilizes the neurotransmitter balance. **2. Analysis of Incorrect Options:** * **A. Antipsychotics:** These are actually the **treatment of choice** for the agitation associated with delirium. Low-dose Haloperidol is frequently used because it antagonizes dopamine, helping to restore the neurochemical balance. * **C. Benzodiazepines (BZD):** While BZDs can worsen delirium in the elderly or cause "paradoxical agitation," they are not the primary pharmacological *cause* of the underlying cholinergic deficit. They are generally avoided in delirium **unless** the delirium is caused by Alcohol Withdrawal or BZD withdrawal. * **D. Antihistamines:** While first-generation antihistamines (like diphenhydramine) have anticholinergic side effects and can cause delirium, "Anticholinergics" as a class is the more specific and direct answer regarding the underlying pathophysiology. **3. High-Yield Clinical Pearls for NEET-PG:** * **Drug of Choice for Delirium:** Haloperidol (IV/IM/Oral). * **Delirium vs. Dementia:** Delirium is acute, reversible, and characterized by **fluctuating levels of consciousness** and impaired attention. * **The "BZD Exception":** Use Benzodiazepines for delirium *only* if the etiology is Alcohol or Sedative-Hypnotic withdrawal. * **Post-Op Risk:** Post-cardiac surgery delirium is common (up to 30-50%) and is associated with increased mortality and longer ICU stays.

Question 2: What is the most common psychological feature of AIDS?

A. Depression (Correct Answer)
B. Mania
C. Suicidal tendency
D. None of the above

Explanation: **Explanation:** **1. Why Depression is the Correct Answer:** Depression is the most common psychiatric manifestation in patients living with HIV/AIDS, with a prevalence significantly higher than in the general population (estimated between 20% to 40%). The etiology is multifactorial: * **Biological:** Direct neurotoxic effects of the HIV virus on the subcortical structures and the release of pro-inflammatory cytokines. * **Psychosocial:** The stigma associated with the diagnosis, loss of social support, chronic physical debilitation, and the burden of lifelong medication. * **Pharmacological:** Certain antiretroviral drugs (like Efavirenz) are known to induce depressive symptoms. **2. Analysis of Incorrect Options:** * **B. Mania:** While "AIDS Mania" is a recognized clinical entity (often occurring in late stages due to organic brain involvement), it is far less common than depression. It is usually characterized by irritability rather than euphoria. * **C. Suicidal tendency:** While HIV patients have a higher risk of suicide compared to the general population (especially shortly after diagnosis), it is considered a complication or a severe symptom of underlying depression rather than the most common psychological feature itself. **3. NEET-PG High-Yield Pearls:** * **Most common psychiatric disorder in HIV:** Depression. * **Most common CNS opportunistic infection:** Toxoplasmosis (though Cryptococcus is the most common fungal infection). * **HIV-Associated Neurocognitive Disorder (HAND):** Ranges from mild impairment to **AIDS Dementia Complex (ADC)**, characterized by subcortical dementia (psychomotor slowing, memory loss). * **Drug Alert:** **Efavirenz** (an NNRTI) is frequently associated with neuropsychiatric side effects, including vivid dreams, insomnia, and depression. * **Treatment:** SSRIs are the first-line treatment for depression in AIDS, but clinicians must monitor for drug-drug interactions with Protease Inhibitors (CYP450 inhibition).

Question 3: Depression is most commonly seen in patients suffering from which of the following cancers?

A. Brain cancer
B. Pancreatic cancer (Correct Answer)
C. Lung cancer
D. Kidney cancer

Explanation: **Explanation:** The association between **Pancreatic Cancer** and **Depression** is a classic high-yield concept in Consultation-Liaison Psychiatry. **Why Pancreatic Cancer is the Correct Answer:** Pancreatic cancer has the highest prevalence of depression among all malignancies (estimated between 30-50%). Crucially, depression in these patients often presents as a **prodromal symptom**, appearing months before the physical diagnosis of the tumor. The underlying mechanism is believed to be **paraneoplastic** in nature, involving the release of pro-inflammatory cytokines (like IL-6 and TNF-alpha) and alterations in the kynurenine pathway, which depletes serotonin levels even before significant tumor burden or cachexia occurs. **Analysis of Incorrect Options:** * **A. Brain Cancer:** While brain tumors (especially frontal lobe lesions) can cause personality changes and mood symptoms, the statistical prevalence of clinical depression is lower than in pancreatic cancer. * **C. Lung Cancer:** Depression is common in lung cancer due to high symptom burden and smoking-related comorbidities, but it typically follows the diagnosis rather than preceding it as a biological prodrome. * **D. Kidney Cancer:** While chronic illness increases the risk of adjustment disorders, there is no specific biological or statistical link making it the "most common" compared to pancreatic malignancy. **NEET-PG High-Yield Pearls:** * **Prodromal Depression:** If an elderly patient presents with new-onset depression and unexplained weight loss, always screen for occult pancreatic malignancy. * **Cytokine Theory:** Depression in cancer is not just a psychological reaction; it is often a biological manifestation of systemic inflammation. * **Treatment:** SSRIs remain the first-line treatment, but Mirtazapine is often preferred in cancer patients to help with insomnia and appetite stimulation.

Question 4: Which of the following psychiatric illnesses is common in a patient with stroke?

A. Schizophrenia
B. Depression (Correct Answer)
C. Bipolar disorder
D. Psychosis

Explanation: **Explanation:** **Post-Stroke Depression (PSD)** is the most common neuropsychiatric complication following a stroke, affecting approximately **30% to 35%** of survivors. 1. **Why Depression is Correct:** The etiology of PSD is multifactorial, involving both **biological factors** (disruption of amine pathways, particularly serotonin and norepinephrine, due to ischemic injury) and **psychosocial factors** (reaction to new physical disability and loss of independence). Studies indicate that lesions in the **left frontal cortex** and **left basal ganglia** are more strongly associated with the development of severe depression. 2. **Why Other Options are Incorrect:** * **Schizophrenia:** This is a primary psychotic disorder with a typical onset in late adolescence or early adulthood. While "post-stroke psychosis" can occur, it is rare compared to mood disorders. * **Bipolar Disorder:** Post-stroke mania is significantly less common than depression and is usually associated with lesions in the **right hemisphere** (specifically the temporal or orbitofrontal cortex). * **Psychosis:** While strokes can cause hallucinations or delusions (organic psychosis), the prevalence is low (approx. 4-5%) compared to the high incidence of depressive symptoms. **High-Yield Clinical Pearls for NEET-PG:** * **Treatment:** SSRIs (e.g., Sertraline, Fluoxetine) are the first-line treatment for PSD and have been shown to improve both mood and motor recovery. * **Location Correlation:** Left-sided lesions (Frontal) → Depression; Right-sided lesions → Mania/Indifference. * **Differential:** Always rule out **Vascular Dementia** if cognitive decline is prominent alongside mood changes.

Question 5: Consultation-Liaison psychiatry involves diagnosing which of the following?

A. Psychiatric illness in medically ill patients (Correct Answer)
B. Medical illness in psychiatric patients
C. Suicidal tendency in psychiatric patients
D. Suicidal tendency in medically ill patients

Explanation: **Explanation:** **Consultation-Liaison (C-L) Psychiatry**, also known as Psychosomatic Medicine, is a specialized sub-discipline that serves as the bridge between psychiatry and other medical/surgical specialties. **1. Why Option A is Correct:** The primary role of a C-L psychiatrist is to diagnose and manage **psychiatric illnesses occurring in patients hospitalized for medical, surgical, or obstetric conditions**. These patients are often in general hospital wards (e.g., ICU, Oncology, or Cardiology) where their physical illness either triggers, exacerbates, or coexists with a mental disorder (such as Delirium, Depression due to chronic illness, or Adjustment Disorder). **2. Why the Other Options are Incorrect:** * **Option B:** While psychiatrists must be aware of physical health, the primary focus of the *C-L service* is the psychiatric complication of the medical patient, not the primary medical diagnosis of a psychiatric inpatient. * **Options C & D:** While assessing suicidality is a critical skill in psychiatry, it is a specific clinical task rather than the defining scope of the C-L specialty. C-L psychiatry covers a much broader range of conditions, including delirium, capacity assessments, and somatoform disorders. **High-Yield Clinical Pearls for NEET-PG:** * **Most Common Referral:** The most frequent reason for a C-L consultation in a general hospital is **Delirium** (Acute Confusional State). * **Common Scenarios:** Managing post-MI depression, neuropsychiatric symptoms in SLE, or psychological distress in terminal cancer patients. * **Key Function:** It involves two components—**Consultation** (providing expert opinion on a specific patient) and **Liaison** (improving the communication and mental health skills of the non-psychiatric medical staff).

Question 6: A 60-year-old man had undergone cardiac bypass surgery 2 days back. Now he started forgetting things and was not able to recall names and phone numbers of his relatives. What is the probable diagnosis?

A. Alzheimer's disease
B. Delirium (Correct Answer)
C. Depression
D. Post-traumatic psychosis

Explanation: ***Delirium*** - The **acute onset** of memory loss and confusion **2 days after cardiac bypass surgery** is characteristic of **postoperative delirium**. - Delirium is a disturbance in **attention**, **awareness**, and **cognition** that develops over a short period (hours to days) and is directly related to a medical condition or procedure. - **Cardiac surgery** is a well-known risk factor, with delirium occurring in **10-50%** of cardiac bypass patients due to factors like anesthesia, hypoperfusion, inflammation, and physiological stress. - Key features here: **acute onset**, **temporal relationship to surgery**, and **memory/cognitive deficits** without psychotic symptoms. *Alzheimer's disease* - Alzheimer's is a **chronic, progressive neurodegenerative disorder** with **gradual onset** over months to years. - The **sudden appearance** of symptoms immediately after surgery cannot be explained by Alzheimer's disease. - While Alzheimer's causes memory impairment, it does not present acutely in the postoperative setting. *Depression* - Depression can cause **pseudodementia** with cognitive complaints, but the primary features would be **persistent low mood**, **anhedonia**, **sleep disturbance**, and **appetite changes**. - The **acute temporal link** to surgery and absence of mood symptoms make depression unlikely. - Cognitive symptoms in depression are typically subjective complaints rather than objective deficits. *Post-traumatic psychosis* - This would involve **psychotic symptoms** such as **hallucinations**, **delusions**, or **disorganized behavior**, which are not described in this case. - The presentation of simple **memory deficits** without psychotic features does not support this diagnosis. - Surgery itself is not typically considered a psychologically traumatic event that would trigger psychosis.

Question 7: A 68-year-old man who was a diagnosed case of HIV infection for last 12 years was brought to outpatient department for evaluation. His wife reports that for last 6 months she has been noticing changes in his behaviour. She further added that 'He appears uninterested and doesn't seem to care about anything. I haven't seen him crying or saying something negative, but may be he is getting depressed. He is also having difficulty remembering things ' The patient has been irregular with his HIV medications. His last CD4+ cell count, measured 5 months ago, was 210/mm3. While walking , patient was observed to have subtle jerking movements. Which of the following is the likely diagnosis?

A. Alzheimer's disease
B. Major depressive disorder
C. Delirium
D. HIV-associated dementia (Correct Answer)

Explanation: ***HIV-associated dementia*** - The patient's **HIV infection for 12 years**, **low CD4+ count (210/mm3)**, **behavioral changes (apathy, memory difficulties)**, and **subtle jerking movements** are all classic features of HIV-associated dementia (HAD). - HAD is a **subcortical dementia** that presents with cognitive slowing, motor dysfunction, and behavioral changes, often seen in advanced HIV disease. *Alzheimer's disease* - While Alzheimer's involves memory loss and behavioral changes, the patient's **long-standing HIV infection with a low CD4+ count** and **motor symptoms (jerking movements)** make HAD a more direct and likely diagnosis. - Alzheimer's typically presents with more prominent **cortical deficits** like aphasia and apraxia, which are not described here, and is not directly linked to HIV status. *Major depressive disorder* - The patient exhibits **apathy and lack of interest**, which can be symptoms of depression. However, the presence of **memory difficulties, jerking movements**, and a **low CD4+ count** points towards an organic brain pathology rather than solely a mood disorder. - While depression can coexist with HIV, it does not explain the **neurological and motor symptoms** observed. *Delirium* - **Delirium** is characterized by an **acute onset of fluctuating attention and cognition**, often with altered consciousness, and typically has a clear underlying medical cause. - The described symptoms are more insidious (over 6 months), chronic, and progressive rather than acute and fluctuating, making delirium less likely.

Question 8: What does Consultation-liaison (C-L) psychiatry involve?

A. Suicidal tendency in psychiatric patients
B. Suicidal tendency in medically ill
C. Medical illness of psychiatric patients
D. Psychiatric illness in medically ill (Correct Answer)

Explanation: ***Psychiatric illness in medically ill*** - Consultation-liaison (C-L) psychiatry focuses on the **diagnosis** and **management** of mental health conditions that arise in individuals with co-occurring medical illnesses. - It involves close collaboration between psychiatrists and other medical teams to address the psychological impact of physical disease and optimize overall patient care. - This is the **core definition** of C-L psychiatry—psychiatric complications in the context of primary medical illness. *Suicidal tendency in psychiatric patients* - While suicide risk assessment is a crucial part of general psychiatry, this option is too broad as it doesn't emphasize the unique context of C-L psychiatry. - C-L psychiatry specifically addresses psychiatric issues in the context of patients with existing **medical conditions**, not general psychiatric patients. *Suicidal tendency in medically ill* - This is a significant aspect of C-L psychiatry, as medically ill patients may experience **depression** and **distress** leading to suicidal ideation. - However, C-L psychiatry encompasses a **broader range** of psychiatric illnesses in medically ill patients, not just suicidal tendencies—this option is too narrow. *Medical illness of psychiatric patients* - This describes a situation where a patient with a primary psychiatric diagnosis develops a medical illness, which is the **reverse** of the typical C-L psychiatry focus. - While this bidirectional care is also relevant, the core concept of C-L psychiatry is addressing **psychiatric complications** that emerge in the context of a primary medical illness in medical/surgical settings.

Question 9: Insane paresis is associated with -

A. Leishmaniasis
B. Yellow fever
C. Syphilis (Correct Answer)
D. Neisseria meningitidis

Explanation: ***Syphilis*** - **General paresis**, or "insane paresis," is a neuropsychiatric manifestation of **tertiary syphilis**, resulting from chronic meningoencephalitis. - It presents with progressive **dementia**, personality changes, delusions, and neurological deficits. *Leishmaniasis* - This parasitic disease is characterized by various forms including **cutaneous**, **mucocutaneous**, and **visceral leishmaniasis** (kala-azar). - It typically causes skin lesions, mucocutaneous destruction, or systemic symptoms like fever, hepatosplenomegaly, and pancytopenia, but not general paresis. *Yellow fever* - **Yellow fever** is a viral hemorrhagic disease transmitted by mosquitoes, primarily affecting the liver and kidneys. - Symptoms include fever, jaundice, hemorrhage, and shock, but not the neurological degeneration seen in general paresis. *Neisseria meningitidis* - This bacterium causes **meningococcal meningitis** and **meningococcemia**, which are acute and severe infectious diseases. - While it can lead to acute neurological symptoms due to meningitis, it does not cause the chronic, progressive neuropsychiatric syndrome known as general paresis.

Question 10: A patient with pneumonia for 5 days is admitted to the hospital with altered sensorium. He suddenly stops recognizing the doctor and staff, believes he is in jail, and complains of scorpions attacking him. His probable diagnosis is:

A. Acute dementia
B. Acute delirium (Correct Answer)
C. Acute schizophrenia
D. Acute paranoia

Explanation: ***Acute delirium*** - The sudden onset of altered **sensorium**, **disorientation** (not recognizing staff), and **hallucinations** (scorpions, being in jail) in a patient with a medical illness (pneumonia) is a classic presentation of **acute delirium**. - Delirium is characterized by an **acute disturbance in attention and cognition**, often fluctuating, and is commonly triggered by underlying medical conditions, infections, or medications. *Acute dementia* - **Dementia** is a chronic, progressive decline in cognitive function, not an acute or fluctuating state. - While dementia can involve cognitive impairment, it rarely presents with such sudden, vivid hallucinations and marked fluctuations in attention as seen here. *Acute schizophrenia* - **Schizophrenia** is a chronic psychotic disorder characterized by persistent delusions, hallucinations, and disorganized thought, typically with an onset in late adolescence or early adulthood. - The acute onset and clear precipitating factor (pneumonia) in an older adult (implied by pneumonia severity) make schizophrenia less likely; its symptoms are usually not as directly attributable to a physical illness. *Acute paranoia* - **Paranoia** involves irrational and persistent mistrust or suspicion of others, often with persecutory delusions but without the global cognitive impairment, disorientation, or vivid visual/tactile hallucinations described. - While the patient's belief of being in jail could be considered a delusion, the broader constellation of symptoms points strongly to a more widespread cognitive dysfunction indicative of delirium.

Question 11: Which type of pain is primarily associated with psychological factors and lacks a clear physical cause?

A. Pain caused by nerve damage
B. Pain resulting from physical injury
C. Pain from internal organs
D. Pain with no identifiable physical cause (Correct Answer)

Explanation: ***Pain with no identifiable physical cause*** - This describes **psychogenic pain** (also termed **somatic symptom disorder** in modern classification), where psychological factors like stress, anxiety, or depression significantly contribute to the experience of pain without a clear **physical pathology**. - The pain is real to the individual, even if a physical origin cannot be found, highlighting the strong **mind-body connection**. - Common in **conversion disorder**, **somatization disorder**, and **persistent somatoform pain disorder** (ICD-10). *Pain caused by nerve damage* - This is **neuropathic pain**, a type of chronic pain resulting from damage to the **somatosensory nervous system**. - It has a clear physical cause, such as **diabetic neuropathy**, **post-herpetic neuralgia**, or a **herniated disc**. *Pain resulting from physical injury* - This is **nociceptive pain**, which arises from actual or threatened damage to **non-neural tissue** and is due to the activation of **nociceptors**. - Examples include sprains, fractures, burns, or post-surgical pain, all of which have a clear **physical etiology**. *Pain from internal organs* - This is **visceral pain**, which originates from internal organs and is often described as diffuse, deep, and poorly localized. - It has a clear anatomical source, such as **appendicitis**, **gallstones**, **myocardial infarction**, or **ureteral colic**.

Question 12: The most common postoperative psychiatric condition is:

A. Schizophrenia
B. Delirium (Correct Answer)
C. Chronic brain syndrome
D. Depression

Explanation: ***Delirium*** - **Delirium** is the most common postoperative psychiatric condition, characterized by an acute onset of **waxing and waning attention**, **disorganized thinking**, and altered level of consciousness. - It is often seen in elderly patients and those with pre-existing cognitive impairment, due to the stress of surgery, anesthesia, and medication effects. *Schizophrenia* - **Schizophrenia** is a chronic psychotic disorder with onset typically in late adolescence or early adulthood, characterized by hallucinations, delusions, and disorganized thinking. - It is not typically triggered by surgery but rather a long-term psychiatric illness with a different etiology. *Chronic brain syndrome* - **Chronic brain syndrome** is an outdated term typically used to describe **dementia** or other persistent cognitive impairments. - While patients with chronic cognitive impairment are at higher risk for postoperative delirium, chronic brain syndrome itself is not an acute postoperative psychiatric condition. *Depression* - **Depression** is a common mood disorder characterized by persistent sadness, loss of interest, and other symptoms. - While depression can occur postoperatively, especially in patients with prolonged recovery or poor outcomes, it is typically not the most common acute psychiatric condition immediately following surgery.

Question 13: Neuropsychiatric complications of HIV include all except which of the following?

A. HIV-associated dementia
B. Depression
C. Psychosis
D. Bipolar disorder (Correct Answer)

Explanation: ***Bipolar disorder*** - While individuals with HIV may experience mood disorders, **bipolar disorder** is not considered a direct neuropsychiatric complication of the HIV virus itself. - The prevalence of bipolar disorder in HIV-positive individuals is similar to the general population, suggesting it's not causally linked to HIV neuropathogenesis. *HIV-associated dementia* - **HIV-associated dementia** (HAD) is a common and severe neuropsychiatric complication directly caused by chronic HIV infection in the central nervous system. - It manifests as progressive cognitive decline, motor dysfunction, and behavioral changes. *Depression* - **Depression** is a prevalent neuropsychiatric complication in HIV-positive individuals, often due to a combination of physiological effects of the virus, psychosocial stressors, and medication side effects. - It significantly impacts quality of life and adherence to antiretroviral therapy. *Psychosis* - **Psychosis**, including symptoms like hallucinations and delusions, can occur in HIV-infected individuals, particularly in advanced stages or when complicated by opportunistic infections or medication effects on the brain. - This can be a direct result of HIV's impact on neural pathways or a consequence of secondary CNS issues.

Question 14: What is the most common postoperative psychiatric complication?

A. Delirium (Correct Answer)
B. Depression
C. Psychosis
D. Anxiety

Explanation: ***Delirium*** - **Delirium** is the most frequent postoperative psychiatric complication, especially in elderly patients and those undergoing major surgery. - It is an acute **neuropsychiatric syndrome** characterized by fluctuating attention, disorganized thinking, and altered level of consciousness. - Incidence ranges from **15-50% in elderly surgical patients** and **up to 80% in ICU settings**. *Depression* - Postoperative depression is common but typically emerges days to weeks after surgery, unlike the acute onset of **delirium**. - While it can significantly affect recovery, its incidence directly after surgery is lower than that of **delirium**. *Psychosis* - Postoperative psychosis is relatively rare and often linked to pre-existing psychiatric conditions, substance withdrawal, or severe medical complications. - It involves more severe thought disturbances and hallucinations than the more common **delirium**. *Anxiety* - Postoperative anxiety is common and can affect recovery, but it is typically **less severe** than delirium. - Unlike delirium, anxiety does not involve altered consciousness or acute cognitive impairment requiring immediate psychiatric intervention.

Practice by Chapter

Principles of Consultation-Liaison Psychiatry

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Psychiatric Manifestations of Medical Illnesses

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Delirium: Assessment and Management

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Psychosomatic Disorders

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Functional Neurological Symptom Disorders

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Chronic Pain Management

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Psychological Factors Affecting Medical Conditions

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Psychiatric Aspects of Terminal Illness

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Organ Transplantation Psychiatry

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Psycho-oncology

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Psychocardiology

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Neuropsychiatry

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