Psychotic Disorders — MCQs

Psychotic Disorders Indian Medical PG Practice Questions and MCQs

Question 161: Who first used the term catatonia?

A. Karl Kahlbaum (Correct Answer)
B. Adolf Meyer
C. Leo Kanner
D. Karen Horney

Explanation: **Explanation:** **Karl Kahlbaum** is the correct answer. In **1874**, the German psychiatrist Karl Ludwig Kahlbaum first described **Catatonia** as a distinct clinical entity. He characterized it as a "tension insanity" (*Die Katatonie oder das Spannungsirresein*), describing a syndrome where motor abnormalities (like stupor, mutism, and posturing) were associated with mental illness. While catatonia is now recognized as a specifier for various conditions (mood disorders, schizophrenia, or medical conditions), Kahlbaum was the pioneer who first identified its unique cluster of motor signs. **Analysis of Incorrect Options:** * **Adolf Meyer:** Known for his "psychobiological" approach to psychiatry, he emphasized the importance of a patient's life history and environment. * **Leo Kanner:** Famous for first describing **Infantile Autism** (Kanner’s Syndrome) in 1943. * **Karen Horney:** A prominent psychoanalyst known for her theories on **neurosis** and feminine psychology; she challenged many of Freud’s views. **High-Yield Clinical Pearls for NEET-PG:** * **Emil Kraepelin** later incorporated catatonia as a subtype of *Dementia Praecox* (Schizophrenia). * **Eugen Bleuler** coined the term "Schizophrenia" and described the "4 As." * **Drug of Choice (DOC):** For Catatonia, the first-line treatment is **Lorazepam** (the "Lorazepam Challenge Test" is also diagnostic). * **Definitive Treatment:** If benzodiazepines fail, **Electroconvulsive Therapy (ECT)** is the most effective treatment for catatonia.

Question 162: Regarding Ganser's syndrome, which statement is true?

A. Repeated lying
B. Approximate answers (Correct Answer)
C. Unconscious episodes
D. Malingering

Explanation: **Explanation:** **Ganser’s Syndrome** (also known as "Prisoner’s Psychosis") is a rare dissociative disorder characterized by the production of **approximate answers** (*vorbeireden*). 1. **Why "Approximate Answers" is correct:** This is the hallmark feature of the syndrome. Patients provide answers that are clearly wrong but show that the patient has understood the nature of the question. For example, if asked how many legs a horse has, the patient might answer "five." This indicates the patient is "skipping past" the correct answer. 2. **Why other options are incorrect:** * **Repeated lying:** This is characteristic of *Pseudologia Fantastica* (pathological lying), often seen in personality disorders, not Ganser’s. * **Unconscious episodes:** While Ganser’s is classified as a dissociative disorder and may involve a "clouding of consciousness," it is not defined by unconsciousness or seizures. * **Malingering:** Although Ganser’s syndrome involves secondary gain (often seen in prisoners seeking leniency), it is traditionally classified under **Dissociative Disorders** (ICD-10) or sometimes Factitious Disorder. Unlike malingering, the symptoms in Ganser’s are generally considered to be produced unconsciously. **High-Yield Clinical Pearls for NEET-PG:** * **Tetrad of Ganser’s:** 1. Approximate answers (*Vorbeireden*), 2. Clouding of consciousness, 3. Somatic conversion symptoms, and 4. Hallucinations. * **Demographics:** Most commonly associated with male prisoners. * **ICD-10 Classification:** F44.89 (Other dissociative and somatoform disorders). * **Key term to remember:** *Vorbeireden* (the German term for "talking past" the point).

Question 163: Impaired insight is characteristically found in which of the following conditions?

A. Traumatic psychosis (Correct Answer)
B. Obsessive-compulsive neurosis
C. Anxiety neurosis
D. All of the above

Explanation: **Explanation:** The core concept tested here is the distinction between **Psychosis** and **Neurosis**. **1. Why Traumatic Psychosis is correct:** Insight refers to a patient’s ability to recognize that their experiences (hallucinations, delusions) are symptoms of a mental illness. In **Psychotic disorders** (like Traumatic Psychosis, Schizophrenia, or Mood disorders with psychotic features), there is a fundamental "loss of contact with reality." Patients typically lack insight (Grade 1 or 2), meaning they do not believe they are ill and often refuse treatment. Traumatic psychosis, being a psychotic condition resulting from brain injury, involves this characteristic impairment of reality testing and insight. **2. Why other options are incorrect:** * **Obsessive-Compulsive Neurosis (OCD):** In neurotic disorders, reality testing remains intact. Patients with OCD have "ego-dystonic" thoughts; they recognize their obsessions are irrational and products of their own mind, which causes them distress. Thus, insight is preserved. * **Anxiety Neurosis:** Similar to other neuroses (like Phobias or Panic Disorder), patients are fully aware that their symptoms (palpitations, trembling, fear) are abnormal and seek help voluntarily. **Clinical Pearls for NEET-PG:** * **Insight Scale:** It is measured on a 6-point scale (Grade 1: Complete denial; Grade 6: True emotional insight). * **Ego-dystonic vs. Ego-syntonic:** Neurotic symptoms are usually ego-dystonic (unacceptable to the self), while psychotic symptoms are often ego-syntonic (perceived as part of the self/reality). * **Exceptions:** Note that "Poor insight" can occur in severe OCD, but "Impaired insight" remains a hallmark diagnostic criterion for Psychosis.

Question 164: Which of the following is not a disorder of the form of thought?

A. Derailment
B. Tangentiality
C. Thought block (Correct Answer)
D. Loosening of association

Explanation: ### Explanation In psychiatry, thought disorders are classified into four main categories: **Stream/Flow, Form, Content, and Possession.** Understanding this distinction is crucial for NEET-PG. **1. Why "Thought Block" is the correct answer:** Thought block is a disorder of the **Stream (or Flow)** of thought. It is the sudden, involuntary cessation of the train of thought before a concept is completed. The patient suddenly stops speaking and, after a silence, often cannot recall what they were saying or starts a new topic. **2. Why the other options are incorrect:** Options A, B, and D are all disorders of the **Form of thought** (Formal Thought Disorder). This refers to how ideas are linked together: * **Loosening of Association (Option D):** A lack of logical connection between sequential thoughts; the hallmark of schizophrenia. * **Derailment (Option A):** Often used interchangeably with loosening of association, where the patient "slides off the track" onto another unrelated topic. * **Tangentiality (Option B):** The patient replies to a question in an oblique or irrelevant manner, never reaching the original goal or point. --- ### High-Yield Clinical Pearls for NEET-PG: * **Disorder of Content:** Includes **Delusions**, obsessions, and phobias. * **Disorder of Possession:** Includes **Thought Insertion, Withdrawal, and Broadcasting** (Schneiderian First Rank Symptoms). * **Neologism:** Coining new words with private meanings; also a disorder of **Form**. * **Circumstantiality:** The patient includes excessive unnecessary detail but eventually returns to the point (unlike tangentiality). This is a disorder of **Stream/Flow**. * **Flight of Ideas:** Rapid shifting of ideas with some connection (often phonetic or "clang association"); seen in **Mania**. This is a disorder of **Stream/Flow**.

Question 165: Catatonic features are seen in schizophrenia. In which other conditions are catatonic features also seen?

A. Severe depression and conversion disorder
B. Severe depression
C. Severe depression and personality disorder (Correct Answer)
D. Conversion disorder and personality disorder

Explanation: **Explanation:** Catatonia is a psychomotor syndrome characterized by a range of symptoms including stupor, mutism, posturing, and waxy flexibility. While historically associated primarily with Schizophrenia, modern psychiatry recognizes that catatonia is more frequently associated with **Mood Disorders** and other psychiatric or medical conditions. **1. Why Option C is Correct:** * **Severe Depression:** Catatonic depression is a well-recognized subtype of Major Depressive Disorder (MDD). Patients may present with extreme withdrawal, immobility, or refusal to eat. In clinical practice, mood disorders are actually the most common psychiatric cause of catatonia. * **Personality Disorders:** Certain personality disorders, particularly **Borderline Personality Disorder (BPD)** and **Histrionic Personality Disorder**, can present with transient catatonic features during periods of extreme emotional crisis or dissociative episodes. **2. Why Other Options are Incorrect:** * **Conversion Disorder (Options A, D):** While conversion disorder involves neurological symptoms (like paralysis or seizures) without a physical cause, it is distinct from the psychomotor syndrome of catatonia. Catatonia involves a specific cluster of signs (e.g., negativism, echolalia) not typical of conversion disorder. * **Options A & B:** These are incomplete because they omit the documented association with personality disorders or include conversion disorder, which is not a primary association. **NEET-PG High-Yield Pearls:** * **Drug of Choice (DOC):** Benzodiazepines (specifically **Lorazepam**) are the first-line treatment for catatonia (the "Lorazepam Challenge Test"). * **Definitive Treatment:** Electroconvulsive Therapy (ECT) is the most effective treatment for refractory catatonia or life-threatening "Lethal Catatonia." * **DSM-5 Update:** Catatonia is no longer a standalone diagnosis; it is used as a **specifier** for other conditions (e.g., "Depressive disorder with catatonic features"). * **Most Common Cause:** Statistically, Bipolar Disorder and Major Depression are more common causes of catatonia than Schizophrenia.

Question 166: Schizophrenia is characterized by which of the following?

A. Delusion
B. Auditory Hallucination
C. Elation (Correct Answer)
D. Catatonia

Explanation: **Explanation:** The question asks for the feature that is **NOT** characteristic of Schizophrenia (implied by the selection of "Elation" as the correct answer in this context). **1. Why "Elation" is the Correct Answer:** Elation is a state of extreme happiness, euphoria, and increased psychomotor activity, which is a hallmark feature of **Mania** (Bipolar Disorder), not Schizophrenia. While Schizophrenia involves disturbances in affect, it typically manifests as **blunted or flat affect**, or **inappropriate affect** (e.g., laughing at a funeral). Elation represents a primary mood disturbance, whereas Schizophrenia is primarily a thought disorder. **2. Analysis of Incorrect Options:** * **Delusion (Option A):** These are fixed, false beliefs. They are a "Positive Symptom" and a core diagnostic criterion for Schizophrenia (Schneider’s First Rank Symptoms). * **Auditory Hallucination (Option B):** Specifically, hearing voices (third-person or running commentary) is the most common type of hallucination in Schizophrenia. * **Catatonia (Option D):** This refers to a state of psychomotor disturbance (e.g., stupor, waxy flexibility, or mutism) that can occur in a specific subtype known as **Catatonic Schizophrenia**. **Clinical Pearls for NEET-PG:** * **Schneider’s First Rank Symptoms (FRS):** Includes audible thoughts, voices arguing/commenting, somatic passivity, and delusional perception. * **Bleuler’s 4 A’s of Schizophrenia:** Ambivalence, Autism (social withdrawal), Affective flattening, and Association looseness. * **Dopamine Hypothesis:** Schizophrenia is associated with increased dopamine activity in the mesolimbic pathway. * **Prognosis:** "Good prognosis" factors include late onset, female sex, and presence of positive symptoms; "Poor prognosis" includes early onset, male sex, and negative symptoms.

Question 167: Fregoli's Syndrome is characterized by which of the following delusions?

A. Delusion of doubles (Correct Answer)
B. Delusion of persecution
C. Delusion of twins
D. Delusion of parasites

Explanation: **Explanation:** **Fregoli’s Syndrome** is a rare neuropsychiatric condition classified as a **Delusional Misidentification Syndrome (DMS)**. In this syndrome, the patient holds a delusional belief that different people are actually a single person (usually a perceived persecutor) who is changing their appearance or wearing a disguise to follow them. It is termed a **"delusion of doubles"** because the patient identifies a familiar person in the bodies of various strangers. * **Option A (Correct):** It is a delusion of doubles where the patient over-identifies strangers as familiar people. This is the opposite of **Capgras Syndrome**, where a patient believes a familiar person has been replaced by an identical-looking impostor. * **Option B (Incorrect):** While Fregoli’s often has a paranoid flavor, "Delusion of persecution" is a broad category seen in Schizophrenia and is not the specific definition of this syndrome. * **Option C (Incorrect):** "Delusion of twins" is not a standard psychiatric term, though it is sometimes confused with the "Subjective Double" (the belief that a doppelgänger of oneself exists). * **Option D (Incorrect):** Delusion of parasites (Ekbom Syndrome) is the false belief that one is infested with small organisms. **Clinical Pearls for NEET-PG:** * **Capgras Syndrome:** Most common DMS; "Hypo-identification" (Familiar person = Stranger/Impostor). * **Fregoli Syndrome:** "Hyper-identification" (Stranger = Familiar person). * **Intermetamorphosis:** Belief that people swap identities with each other both physically and psychologically. * **Anatomical Association:** Often associated with lesions in the **right hemisphere** or bifrontal lobes, leading to a disconnection between visual recognition and emotional significance.

Question 168: A 40-year-old male presents with complaints of six months of odd and disorganized behavior, and auditory hallucinations. What is the likely diagnosis?

A. Schizophrenia (Correct Answer)
B. Delusional disorder
C. Major depression
D. Conversion disorder

Explanation: **Explanation:** The clinical presentation of **disorganized behavior** and **auditory hallucinations** persisting for **six months** is the classic diagnostic requirement for **Schizophrenia** according to DSM-5 criteria. 1. **Why Schizophrenia is correct:** Diagnosis requires at least two of the following: delusions, hallucinations, disorganized speech, grossly disorganized/catatonic behavior, or negative symptoms. Crucially, symptoms must persist for at least **6 months** (including prodromal or residual phases) with at least 1 month of active-phase symptoms. This patient meets both the symptomatic and temporal criteria. 2. **Why other options are incorrect:** * **Delusional Disorder:** Characterized by one or more delusions for $\geq$1 month. Hallucinations are typically absent or not prominent, and disorganized behavior is not a feature. * **Major Depression:** While "Psychotic Depression" exists, the primary pathology must be a persistent low mood or anhedonia. This patient’s presentation is dominated by primary psychotic features without mentioned mood symptoms. * **Conversion Disorder (Functional Neurological Symptom Disorder):** Involves unexplained sensory or motor deficits (e.g., paralysis, blindness) triggered by psychological stress, not auditory hallucinations or disorganized behavior. **High-Yield Clinical Pearls for NEET-PG:** * **Timeframe Rule:** * <1 month: Brief Psychotic Disorder * 1–6 months: Schizophreniform Disorder * >6 months: Schizophrenia * **Most Common Hallucination:** Auditory (specifically third-person commentary is highly suggestive). * **Schneider’s First Rank Symptoms (FRS):** Includes thought insertion, withdrawal, broadcast, and "made" phenomena. While not required for DSM-5, they remain high-yield for identifying Schizophrenia in exams. * **Prognosis:** Good prognostic factors include late onset, female sex, and presence of positive symptoms.

Question 169: Generalized paresis of the insane is seen in which stage of syphilis?

A. Primary stage
B. Secondary stage
C. Tertiary stage (Correct Answer)
D. Congenital syphilis

Explanation: **Explanation:** **Generalized Paresis of the Insane (GPI)**, also known as paretic neurosyphilis or dementia paralytica, is a chronic meningoencephalitis caused by the invasion of the brain parenchyma by *Treponema pallidum*. **Why Tertiary Stage is Correct:** Neurosyphilis is a manifestation of **Tertiary Syphilis**, occurring typically 10 to 25 years after the initial infection. GPI represents the "parenchymatous" form of neurosyphilis, characterized by a progressive decline in cognitive function, personality changes (classically megalomania/grandiosity), and neurological deficits. **Analysis of Incorrect Options:** * **Primary Stage:** Characterized by the appearance of a painless chancre at the site of inoculation. It is a localized infection. * **Secondary Stage:** Represents hematogenous dissemination, presenting with generalized lymphadenopathy, maculopapular rashes (palms and soles), and condyloma lata. While "asymptomatic" meningitis can occur here, GPI is not seen. * **Congenital Syphilis:** While neurosyphilis can occur in congenital cases (juvenile paresis), the classic description of "Generalized Paresis of the Insane" refers to the late-stage manifestation of acquired syphilis in adults. **High-Yield Clinical Pearls for NEET-PG:** * **Psychiatric Symptoms:** Memory loss, irritability, and **grandiose delusions** are hallmark features. * **Physical Sign:** **Argyll Robertson Pupil** (Accommodation reflex present, Light reflex absent) is frequently associated. * **The "Paressis" Mnemonic:** **P**ersonality, **A**ffect, **R**eflexes (hyperreflexia), **E**ye (Argyll Robertson), **S**ensorium (illusions/hallucinations), **I**ntellect (dementia), **S**peech (slurred). * **Diagnosis:** CSF-VDRL is highly specific for neurosyphilis.

Question 170: Which of the following is NOT an environmental risk factor for schizophrenia?

A. Cannabis use
B. Migration
C. Higher socioeconomic status (Correct Answer)
D. Obstetric complications

Explanation: **Explanation:** Schizophrenia is a complex neurodevelopmental disorder influenced by both genetic and environmental factors. The correct answer is **Higher socioeconomic status (SES)** because, epidemiologically, schizophrenia is consistently associated with **lower socioeconomic status** (the "Social Drift" hypothesis). **Why Higher SES is the correct answer:** Studies show that schizophrenia is more prevalent in urban, impoverished areas. According to the **Social Selection (Social Drift) Hypothesis**, individuals with schizophrenia or those predisposed to it often drift down the socioeconomic ladder due to cognitive impairment and inability to maintain employment. Conversely, the **Social Causation Hypothesis** suggests that the stressors of poverty increase the risk of developing the disorder. Higher SES is generally considered a protective factor or at least not a risk factor. **Analysis of Incorrect Options:** * **Cannabis Use (A):** Heavy cannabis use, especially during adolescence, is a well-established risk factor. It can trigger the onset of psychosis in genetically vulnerable individuals by modulating dopaminergic pathways. * **Migration (B):** Migration and belonging to an ethnic minority group are significant risk factors, likely due to social exclusion, "minority stress," and lack of social support. * **Obstetric Complications (C):** Prenatal and perinatal insults (e.g., fetal hypoxia, maternal infections like Influenza, or malnutrition) disrupt early brain development, increasing the risk of schizophrenia later in life. **High-Yield Clinical Pearls for NEET-PG:** * **Paternal Age:** Advanced paternal age (>45-50 years) is a significant risk factor due to de novo mutations in sperm. * **Season of Birth:** There is a higher incidence of schizophrenia in children born in **late winter and early spring** (possibly due to seasonal viral infections). * **Urbanicity:** Growing up in an urban environment doubles the risk compared to rural areas.

Practice by Chapter

Schizophrenia: Epidemiology and Etiology

Practice Questions

Schizophrenia: Clinical Features

Practice Questions

Schizophrenia: Treatment

Practice Questions

Schizoaffective Disorder

Practice Questions

Delusional Disorders

Practice Questions

Brief Psychotic Disorder

Practice Questions

Substance-Induced Psychotic Disorders

Practice Questions

Psychosis in Medical Conditions

Practice Questions

First Episode Psychosis

Practice Questions

Treatment-Resistant Psychosis

Practice Questions

Rehabilitation in Psychotic Disorders

Practice Questions

Outcome and Prognosis

Practice Questions

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