Psychotic Disorders Practice Questions

Q: What are the biochemical abnormalities implicated in schizophrenia?

Increased dopamine and increased serotonin. ### Explanation The biochemical basis of schizophrenia is primarily explained by the **Dopamine Hypothesis** and the **Serotonin Hypothesis**. **Why Option B is Correct:** 1. **Dopamine Hypothesis:** Schizophrenia is associated with **increased dopaminergic activity** in the mesolimbic pathway (responsible for positive symptoms like hallucinations and delusions). While there is a decrease in the mesocortical pathway (leading to negative symptoms), the overall classic teaching for exams emphasizes "increased dopamine." 2. **Serotonin Hypothesis:** Research and the efficacy of **Atypical Antipsychotics** (Second Generation Antipsychotics like Risperidone and Clozapine) highlight the role of **increased serotonin (5-HT)**. These drugs act as 5-HT2A receptor antagonists, proving that serotonin excess contributes to the pathogenesis, particularly modulating dopamine release. **Why Other Options are Incorrect:** * **Options C & D:** Decreased dopamine levels are generally associated with Parkinson’s disease or the side effects of antipsychotic medications (Extrapyramidal symptoms), not the primary pathology of schizophrenia. * **Option A:** While dopamine is the most famous neurotransmitter involved, focusing solely on dopamine ignores the significant role of serotonin, which is a key target in modern psychiatric management. **High-Yield Clinical Pearls for NEET-PG:** * **Glutamate Hypothesis:** Decreased NMDA receptor activity (hypofunction) is also implicated in schizophrenia. * **Pathways to Remember:** * **Mesolimbic:** ↑ Dopamine → Positive Symptoms. * **Mesocortical:** ↓ Dopamine → Negative Symptoms. * **Nigrostriatal:** Blockade here leads to EPS (Extrapyramidal Symptoms). * **Tuberoinfundibular:** Blockade here leads to Hyperprolactinemia. * **GABA:** There is often a decrease in GABAergic inhibitory neurotransmission in the prefrontal cortex of schizophrenic patients.

Q: A 40-year-old woman with a long-standing history of chronic depression states, "My belly and chest are empty. All my organs are gone. I don't exist. I'm dead." What type of delusion is this patient presenting with?

Nihilistic delusions. ### Explanation **Correct Answer: C. Nihilistic delusions** **1. Why it is correct:** The patient is exhibiting **nihilistic delusions** (also known as **Cotard’s syndrome** or "walking corpse syndrome"). These are characterized by the false belief that one is dead, non-existent, or that their internal organs have rotted or disappeared. In this case, the patient’s statements ("organs are gone," "I don't exist," "I'm dead") are classic manifestations. These delusions are most commonly associated with **severe psychotic depression**, but can also occur in schizophrenia or organic brain syndromes. **2. Why the other options are incorrect:** * **A & B. Paranoid/Persecutory delusions:** These involve the belief that one is being followed, harassed, or conspired against by others. The patient’s focus here is on self-existence, not external threats. * **D. Delusions of reference:** This is the false belief that neutral external events (like a news report or a stranger’s conversation) have a special, personal meaning or message intended specifically for the patient. **3. High-Yield Clinical Pearls for NEET-PG:** * **Cotard’s Syndrome:** A specific triad of nihilistic delusions, melancholic depression, and self-harm/insensitivity to pain. * **Key Association:** While delusions are a hallmark of schizophrenia, nihilistic delusions are a **high-yield indicator of severe depressive psychosis** in exam questions. * **Schneider’s First Rank Symptoms (FRS):** Remember that nihilistic delusions are **not** part of Schneider’s FRS; they are mood-congruent psychotic features. * **Treatment:** Severe cases with nihilistic delusions often require **Electroconvulsive Therapy (ECT)** due to the high risk of self-neglect and refusal to eat.

Q: Which of the following is FALSE regarding schizophrenia?

Sustained mood changes. **Explanation:** Schizophrenia is primarily a **disorder of thought and perception**, whereas **sustained mood changes** (persistent elevation or depression) are the hallmark of **Mood Disorders** (like Bipolar Disorder or Major Depressive Disorder). While patients with schizophrenia may exhibit "blunted affect" or "inappropriate emotions," these are disturbances in the *expression* of emotion rather than a sustained pathological mood state. **Analysis of Options:** * **Sustained mood changes (Correct):** This is the false statement. If sustained mood symptoms are prominent, the diagnosis shifts toward Schizoaffective Disorder or a primary Mood Disorder with psychotic features. * **Third-person auditory hallucinations:** These are classic **Schneiderian First Rank Symptoms (FRS)**. Examples include hearing voices arguing about the patient or a running commentary on the patient's actions. * **Inappropriate emotions:** Also known as **incongruous affect**, this is a core feature where the patient’s emotional response does not match the context (e.g., laughing while describing a tragedy). * **Formal thought disorder:** This refers to a disorganized thinking process manifested through speech, such as loosening of associations, word salad, or neologisms. It is a diagnostic pillar of schizophrenia. **High-Yield Clinical Pearls for NEET-PG:** * **Schneider’s First Rank Symptoms (FRS):** Includes audible thoughts, third-person hallucinations, somatic passivity, and delusional perception. * **Bleuler’s 4 A’s:** Ambivalence, Autism (social withdrawal), Affective blunting, and Association looseness. * **Prognosis:** Good prognostic factors include late onset, female sex, presence of mood symptoms (ironically), and positive symptoms. Poor prognosis is linked to early onset, male sex, and negative symptoms.

Q: Which of the following is NOT considered one of Bleuler's four cardinal symptoms of schizophrenia?

Hallucinations. **Explanation:** Eugen Bleuler, who coined the term "Schizophrenia" in 1911, categorized symptoms into **Fundamental (Primary)** and **Accessory (Secondary)** symptoms. The correct answer is **Hallucinations** because Bleuler classified them as accessory symptoms—features that are common in schizophrenia but not essential for the diagnosis. **Bleuler’s Four A’s (Fundamental Symptoms):** 1. **Loosening of Associations (Option A):** A thought disorder where ideas shift from one subject to another in a completely unrelated manner. 2. **Disturbances of Affect (Option B):** Characterized by inappropriate, blunted, or flattened emotional responses. 3. **Autism (Option C):** A detachment from reality where the patient retreats into a private inner world of fantasies and delusions. 4. **Ambivalence:** The simultaneous existence of contradictory feelings or impulses toward the same object or situation. **Why the other options are incorrect:** Options A, B, and C are the core components of the "Four A’s." Along with Ambivalence, these were considered by Bleuler to be the pathognomonic features present in every case of schizophrenia. **High-Yield Clinical Pearls for NEET-PG:** * **Accessory Symptoms:** Include Hallucinations and Delusions. While clinically striking, Bleuler believed they could occur in other organic brain syndromes. * **Schneider’s First Rank Symptoms (FRS):** Unlike Bleuler, Kurt Schneider emphasized hallucinations (e.g., third-person auditory) and delusions as primary diagnostic criteria. * **The 4 A's Mnemonic:** **A**ssociation, **A**ffect, **A**utism, **A**mbivalence. * **Evolution of Diagnosis:** Modern criteria (DSM-5/ICD-11) now prioritize the symptoms Bleuler called "accessory" (delusions/hallucinations) for diagnosis.

Q: Blunting of affect is seen in which of the following conditions?

Schizophrenia. **Explanation:** **1. Why Schizophrenia is Correct:** Blunting of affect (or affective flattening) refers to a significant reduction in the intensity of emotional expression. It is a hallmark **Negative Symptom** of Schizophrenia. In these patients, the face appears immobile, there is poor eye contact, and the voice lacks inflection (monotone). This occurs due to the underlying neurocognitive deficit and is often associated with a poorer prognosis compared to positive symptoms. **2. Why the Other Options are Incorrect:** * **Depression:** While patients with depression experience a "depressed mood," their affect is typically described as **constricted** (mild reduction in range) or **depressed**, rather than truly blunted. In severe cases, they may show "anhedonia," but blunting is classically associated with the schizophrenia spectrum. * **Mania:** In mania, the affect is **elated, expansive, or irritable**. It is the opposite of blunting; emotions are expressed with heightened intensity and volatility. * **Delirium:** Delirium is an acute organic brain syndrome characterized by a clouding of consciousness and fluctuating attention. While emotional lability (rapid shifts) can occur, blunting is not a diagnostic feature. **3. Clinical Pearls for NEET-PG:** * **The "4 As" of Bleuler:** Remember that **Affective Blunting** is one of Eugen Bleuler’s fundamental symptoms of schizophrenia (along with Autism, Ambivalence, and Loosening of Associations). * **Flat vs. Blunted:** "Flat" is the most severe form (no expression at all), while "Blunted" is a severe reduction. * **Differential:** If a patient on antipsychotics shows blunting, always rule out **Drug-Induced Parkinsonism** (masked facies), which can mimic affective flattening. * **Prognostic Value:** Negative symptoms like blunting are often resistant to first-generation antipsychotics and are better managed with atypical antipsychotics (e.g., Clozapine, Amisulpride).

Q: Which coding system in ICD-10 is used for "Schizophrenia, schizotypal and delusional disorders"?

F20-F29. ### Explanation The **ICD-10 (International Classification of Diseases, 10th Revision)**, published by the WHO, organizes mental and behavioral disorders under Chapter V (the "F" codes). **1. Why F20-F29 is Correct:** This block is specifically designated for **Schizophrenia, Schizotypal, and Delusional disorders**. These disorders are grouped together because they share common features of psychosis, such as hallucinations, delusions, and thought disturbances. * **F20:** Schizophrenia (the most significant member of this group). * **F21:** Schizotypal disorder. * **F22:** Persistent delusional disorders. * **F25:** Schizoaffective disorders. **2. Analysis of Incorrect Options:** * **F10-F19:** Refers to **Mental and behavioral disorders due to psychoactive substance use** (e.g., Alcohol, Opioids, Cannabinoids). * **F30-F39:** Refers to **Mood [affective] disorders**, including Mania (F30), Bipolar Affective Disorder (F31), and Depressive episodes (F32). * **F40-F48:** Refers to **Neurotic, stress-related, and somatoform disorders**, such as Phobic anxiety (F40), OCD (F42), and Reaction to severe stress (F43). **3. High-Yield NEET-PG Clinical Pearls:** * **Schizophrenia (F20):** Diagnosis requires symptoms to be present for at least **one month** according to ICD-10 (Note: DSM-5 requires 6 months of continuous disturbance). * **Schneider’s First Rank Symptoms (FRS):** These are highly characteristic of Schizophrenia and include audible thoughts, third-person hallucinations, and delusions of control. * **Most Common Type:** Paranoid Schizophrenia (F20.0) is the most common subtype worldwide. * **Simple Schizophrenia (F20.6):** Characterized by an insidious onset of negative symptoms (apathy, social withdrawal) *without* prominent hallucinations or delusions.

Q: Erotomania means

delusion of love. **Explanation:** **Erotomania**, also known as **De Clérambault’s Syndrome**, is a type of delusional disorder where the patient holds a fixed, false belief that another person—usually of higher social, financial, or professional status (e.g., a celebrity or a boss)—is deeply in love with them. Despite a lack of evidence or even direct denial from the object of affection, the patient interprets neutral actions as secret signs of love. **Analysis of Options:** * **A. Delusion of love (Correct):** This is the defining feature of Erotomania. It is more common in females, though males with the condition are more likely to exhibit stalking behavior. * **B. Delusion of doubles:** This refers to **Capgras Syndrome**, a delusional misidentification syndrome where the patient believes a familiar person has been replaced by an identical-looking impostor. * **C. Delusion of persecution:** This is the most common type of delusion, where the individual believes they are being conspired against, cheated, or harassed. It is a hallmark of Paranoid Schizophrenia. * **D. Delusion of nihilism:** Also known as **Cotard’s Syndrome**, the patient believes they are dead, non-existent, or that their internal organs are rotting/missing. It is typically seen in severe depressive psychosis. **High-Yield Clinical Pearls for NEET-PG:** * **Primary Erotomania:** Occurs suddenly without other psychiatric symptoms. * **Secondary Erotomania:** Occurs in the context of other disorders like Schizophrenia or Bipolar Disorder. * **Fregoli Syndrome:** The opposite of Capgras; the belief that different strangers are actually a single familiar person in disguise. * **Othello Syndrome:** Delusion of infidelity (pathological jealousy).

Question 1

What are the biochemical abnormalities implicated in schizophrenia?

Accepted Answer

Increased dopamine and increased serotonin

Answer

Increased dopamine

Answer

Decreased dopamine

Answer

Decreased dopamine and decreased serotonin

Question 2

A 40-year-old woman with a long-standing history of chronic depression states, "My belly and chest are empty. All my organs are gone. I don't exist. I'm dead." What type of delusion is this patient presenting with?

Accepted Answer

Nihilistic delusions

Answer

Paranoid delusions

Answer

Delusions of persecution

Answer

Delusions of reference

Question 3

Which of the following is FALSE regarding schizophrenia?

Accepted Answer

Sustained mood changes

Answer

Third person auditory hallucinations

Answer

Inappropriate emotions

Answer

Formal thought disorder

Question 4

A patient complains that people living upstairs are always talking about him and conspire against him. His son complains about his weird behavior, such as keeping shoes in the fridge and wearing a vest over a shirt. What is the likely diagnosis?

Accepted Answer

Schizophrenia

Answer

Depression

Answer

Delusional disorder

Answer

Dementia

Question 5

Which of the following is NOT considered one of Bleuler's four cardinal symptoms of schizophrenia?

Accepted Answer

Hallucinations

Answer

Loosening of associations

Answer

Disturbances of affect

Answer

Autism

Question 6

Blunting of affect is seen in which of the following conditions?

Accepted Answer

Schizophrenia

Answer

Depression

Answer

Mania

Answer

Delirium

Question 7

Which coding system in ICD-10 is used for "Schizophrenia, schizotypal and delusional disorders"?

Accepted Answer

F20-F29

Answer

F10-F19

Answer

F30-F39

Answer

F40-F48

Question 8

Erotomania means

Accepted Answer

delusion of love

Answer

delusion of doubles

Answer

delusion of persecution

Answer

delusion of nihilism

Question 9

The content of thought in delusional disorder, somatic type, is characterized by:

Accepted Answer

Preoccupation with sensations related to bodily functions or odors.

Answer

Preoccupation with a delusion of being ill with physical disease.

Answer

Preoccupation with a delusion of a bodily defect or dysfunction.

Answer

Preoccupation with an imagined physical defect.

Question 10

Impaired insight is evident in which of the following conditions?

Accepted Answer

Schizophrenia

Answer

Psychosomatic disorder

Answer

Anxiety neurosis

Answer

Post Traumatic Stress Disorder

Psychotic Disorders — MCQs

Psychotic Disorders — MCQs

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