Obsessive-Compulsive and Related Disorders Practice Questions

Q: Psychosurgery is used in which of the following conditions?

Obsessive-Compulsive Disorder (OCD). **Explanation:** Psychosurgery, also known as functional neurosurgery for psychiatric disorders, is reserved for patients with severe, chronic, and treatment-resistant conditions who have failed to respond to multiple trials of pharmacotherapy (including high-dose SSRIs and augmentation) and intensive Cognitive Behavioral Therapy (CBT/ERP). **1. Why OCD is the Correct Answer:** OCD is the most common and well-established indication for psychosurgery today. The underlying pathophysiology involves hyperactivity in the **Cortico-Striato-Thalamo-Cortical (CSTC) circuit**. Surgical interventions aim to interrupt this circuit. Common procedures include: * **Subcaudate Tractotomy** * **Anterior Capsulotomy** (most common for OCD) * **Anterior Cingulotomy** * **Limbic Leukotomy** (combination of cingulotomy and tractotomy) **2. Why Other Options are Incorrect:** * **Phobia and GAD (Options A & B):** These anxiety disorders are primarily managed with psychotherapy (CBT) and pharmacotherapy (SSRIs/Benzodiazepines). There is no established surgical target or clinical evidence justifying psychosurgery for these conditions. * **Depression (Option D):** While "Treatment-Resistant Depression" (TRD) is a secondary indication for psychosurgery (specifically Cingulotomy), it is not the primary or most classic indication compared to OCD in the context of standard medical examinations. **High-Yield Clinical Pearls for NEET-PG:** * **Deep Brain Stimulation (DBS):** A modern, reversible alternative to ablative psychosurgery, often targeting the **Internal Capsule** or **Subthalamic Nucleus** for refractory OCD. * **Legal Aspect:** Under the **Mental Healthcare Act (MHCA) 2017** in India, psychosurgery can only be performed with the informed consent of the patient and prior approval from the State Mental Health Authority. * **Criteria:** Symptoms must be present for at least 5 years and be significantly disabling.

Q: An elderly male presents with a history of excessive hand washing and repetitive daily routines. Which of the following is NOT characteristic of obsessions?

Intrusive and unwanted mental events. ### Explanation The core of this question lies in distinguishing between **Obsessions** (mental events) and **Compulsions** (physical or mental acts). **Why Option D is the Correct Answer:** **Repetitive behaviors** are characteristic of **Compulsions**, not obsessions. According to DSM-5 criteria, compulsions are repetitive physical behaviors (e.g., hand washing, checking) or mental acts (e.g., praying, counting) that an individual feels driven to perform in response to an obsession or according to rigid rules. Obsessions, conversely, are strictly internal mental phenomena. **Analysis of Incorrect Options:** * **A. Repetitive thoughts or urges:** This is a hallmark of obsessions. They are persistent, recurrent ideas or impulses that dominate the patient's mind. * **B. Intrusive and unwanted mental events:** By definition, obsessions are intrusive (they enter the mind involuntarily) and cause marked anxiety or distress. *(Note: If the provided key marks this as correct, it is likely a technical error in the question source, as "Intrusive/Unwanted" is a defining feature of obsessions).* * **C. Ego-dystonic nature:** This is a high-yield term for NEET-PG. Ego-dystonic means the thoughts are inconsistent with the patient's self-concept and are viewed as irrational or "alien." This distinguishes OCD from OCPD (Obsessive-Compulsive Personality Disorder), where traits are **ego-syntonic** (perceived as appropriate). **NEET-PG Clinical Pearls:** * **Most common obsession:** Contamination (followed by pathological doubt). * **Most common compulsion:** Checking (followed by washing). * **Treatment of Choice:** SSRIs (at higher doses than for depression) and Cognitive Behavioral Therapy (specifically **Exposure and Response Prevention - ERP**). * **Neurobiology:** Associated with hyperactivity in the **Orbitofrontal Cortex, Anterior Cingulate Gyrus, and Caudate Nucleus** (Cortico-striato-thalamo-cortical circuit).

Q: Which of the following is NOT a characteristic of obsession?

Abstract thinking. **Explanation:** In Psychiatry, **Obsessions** are defined as recurrent, persistent, and intrusive thoughts, urges, or images that are experienced as unwanted and cause significant anxiety or distress. **Why "Abstract Thinking" is the correct answer:** Abstract thinking is a cognitive process involving the ability to understand complex concepts and generalize ideas. It is a component of a normal mental status examination and is **not** a pathological feature of Obsessive-Compulsive Disorder (OCD). In contrast, obsessions are specific, intrusive mental intrusions, not a generalized style of thinking. **Analysis of Incorrect Options:** * **Repetitive behavior:** While obsessions are mental events, they are characteristically **repetitive** in nature. The patient cannot easily dismiss these thoughts, leading to a cycle of recurrence. * **Ego-dystonic:** This is a hallmark of OCD. The patient recognizes that the thoughts are irrational, excessive, and **alien to their self-concept** (ego-dystonic). This distinguishes OCD from OCPD (Obsessive-Compulsive Personality Disorder), where traits are ego-syntonic (perceived as appropriate). * **Compulsion:** Obsessions and compulsions are intrinsically linked. Compulsions are repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession to neutralize anxiety. **High-Yield Clinical Pearls for NEET-PG:** * **Insight:** In OCD, insight is usually preserved (the patient knows the thoughts are their own and are irrational), which differentiates it from delusions in psychosis. * **Most common obsession:** Contamination. * **Most common compulsion:** Checking. * **First-line Treatment:** SSRIs (at higher doses than for depression) and Cognitive Behavioral Therapy (specifically **Exposure and Response Prevention - ERP**). * **Drug of Choice (TCA):** Clomipramine (most potent serotonin reuptake inhibitor).

Q: Ambivalency and ambitendency are typically seen in which of the following conditions?

Obsessive-compulsive disorder. **Explanation:** The correct answer is **Obsessive-compulsive disorder (OCD)**. **Why OCD is correct:** In the context of OCD, **ambivalency** refers to the coexistence of opposing emotions or ideas toward the same object or situation, leading to profound indecisiveness (*folie du doute*). **Ambitendency** is the motor expression of this psychological conflict, where the patient manifests conflicting physical movements (e.g., reaching for an object but withdrawing the hand simultaneously). These features stem from the core pathology of OCD: the inability to reach a sense of "certainty" or "completion," leading to a state of constant doubt and repetitive, hesitant behavior. **Why other options are incorrect:** * **Schizophrenia:** While Eugen Bleuler originally described "Ambivalence" as one of the **4 As** of Schizophrenia, in modern clinical examinations (and specifically NEET-PG patterns), when ambivalency and ambitendency are paired together as a clinical presentation of pathological doubt and motor hesitation, **OCD** is the preferred answer. * **Substance Abuse:** Typically presents with intoxication, withdrawal, or craving symptoms, not the specific psychological-motor conflict of ambitendency. * **Alzheimer’s Disease:** Characterized by cognitive decline and memory loss; while patients may be confused, they do not typically exhibit the classic ambitendency seen in obsessive-compulsive states. **Clinical Pearls for NEET-PG:** * **Bleuler’s 4 As of Schizophrenia:** Ambivalence, Autism, Affective flattening, and Association looseness. * **Ambitendency vs. Mannerism:** Ambitendency is a conflict of movement; Mannerism is a goal-directed movement performed in an unusual/stilted way (seen in Schizophrenia). * **Folie du doute:** A classic term for the "doubting mania" seen in OCD patients that drives ambivalency.

Q: A 26-year-old woman presents with extreme distress, stating her life is significantly affected by intrusive thoughts she recognizes as senseless. She experiences repetitive checking behaviors, such as frequently checking the classroom lock and food, and checking envelopes before mailing. She follows strict routines for most activities. Which of the following is NOT a good long-term treatment option for this patient?

Diazepam. **Explanation:** The clinical presentation describes a classic case of **Obsessive-Compulsive Disorder (OCD)**, characterized by intrusive, ego-dystonic thoughts (obsessions) and repetitive behaviors (compulsions) like checking and rigid routines. **Why Diazepam is NOT a good long-term treatment:** Diazepam is a **Benzodiazepine**. While it may provide short-term relief for the acute anxiety associated with OCD, it has **no anti-obsessional properties**. Long-term use is contraindicated due to the high risk of tolerance, physical dependence, and potential for abuse. Furthermore, benzodiazepines can interfere with the efficacy of behavioral therapies like ERP by preventing the patient from experiencing and habituating to the anxiety. **Analysis of other options:** * **Exposure and Response Prevention (ERP):** This is the **gold-standard psychotherapy** for OCD. It involves exposing the patient to the anxiety-provoking stimulus (e.g., an unlocked door) and preventing the ritualistic response (checking). * **Fluoxetine:** SSRIs (Selective Serotonin Reuptake Inhibitors) are the **first-line pharmacological treatment** for OCD. Note that OCD typically requires higher doses of SSRIs than Depression. * **Clomipramine:** A Tricyclic Antidepressant (TCA) that is highly effective for OCD due to its potent serotonergic activity. It is often considered the most effective drug but is usually second-line due to its side-effect profile (anticholinergic effects, cardiotoxicity). **High-Yield Clinical Pearls for NEET-PG:** * **First-line treatment:** SSRIs + ERP (Combination therapy is superior to either alone). * **Drug of choice (Pharmacological):** SSRIs (e.g., Fluoxetine, Fluvoxamine, Sertraline). * **Most effective drug:** Clomipramine (often used if SSRIs fail). * **Treatment Duration:** OCD requires long-term treatment (at least 1–2 years) as relapse rates are high upon discontinuation.

Q: A patient is preoccupied with the perceived defect in her ear size and repeatedly looks into the mirror. She is possibly suffering from which of the following conditions?

Body dysmorphic disorder. ### Explanation **Correct Option: B. Body dysmorphic disorder (BDD)** **Reasoning:** Body Dysmorphic Disorder is characterized by a distressing or impairing **preoccupation** with one or more perceived defects or flaws in physical appearance that are not observable or appear slight to others. In response to these appearance concerns, the individual performs **repetitive behaviors** (e.g., mirror checking, excessive grooming, skin picking) or mental acts (e.g., comparing appearance with others). In this case, the patient’s preoccupation with ear size and repetitive mirror checking are classic diagnostic features of BDD. **Analysis of Incorrect Options:** * **A. Obsessive Compulsive Disorder (OCD):** While BDD is in the "OCD-spectrum," it is a distinct diagnosis. In OCD, obsessions are not limited to physical appearance, and compulsions are performed to reduce anxiety related to those obsessions. * **C. Normal behavior:** Preoccupation that leads to repetitive behaviors and affects daily functioning is pathological, distinguishing it from vanity or normal concern about appearance. * **D. Hypochondriacal delusion:** This involves a fixed, false belief of having a serious medical illness (e.g., cancer) despite reassurance. BDD focuses on aesthetics/appearance rather than underlying disease. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of concern:** Skin, followed by hair and nose. * **Insight:** Often poor or absent (delusional intensity) in many patients. * **Muscle Dysmorphia:** A subtype of BDD occurring almost exclusively in males, focusing on the idea that the body is too small or insufficiently muscular. * **Treatment of Choice:** Cognitive Behavioral Therapy (CBT) and high-dose SSRIs (similar to OCD). * **Surgical Consultation:** Patients frequently seek plastic surgery or dermatology consultations; however, procedures rarely satisfy the patient and often worsen the symptoms.

Q: Which of the following is a poor prognostic factor for Obsessive-Compulsive Disorder?

Decontamination. **Explanation:** Obsessive-Compulsive Disorder (OCD) is a chronic condition with a waxing and waning course. Identifying prognostic factors is crucial for clinical management and NEET-PG preparation. **Why "Decontamination" is the Correct Answer:** While cleaning and washing rituals are the most common presentation of OCD, **Decontamination (cleaning/washing compulsions)** is statistically associated with a **poorer prognosis**. This is because these rituals are often pervasive, triggered by a wide array of environmental stimuli, and can lead to severe avoidance behaviors, making them more resistant to standard treatments like Exposure and Response Prevention (ERP). **Analysis of Other Options:** * **A. Magical Thinking:** While it represents a more primitive defense mechanism, it is not consistently ranked as the top poor prognostic factor compared to specific ritual types. * **C. Pathological Doubt:** This is a classic feature of OCD (checking rituals). While distressing, it often responds better to pharmacological and behavioral interventions than severe decontamination or hoarding. * **D. Hoarding:** Historically, hoarding was considered a subtype of OCD with a very poor prognosis. However, in DSM-5, **Hoarding Disorder** is now a separate diagnostic entity. Within the context of OCD symptoms, decontamination remains a high-yield poor prognostic marker. **Clinical Pearls for NEET-PG:** * **Good Prognostic Factors:** Good social/occupational adjustment, presence of a precipitating event, and episodic nature of symptoms. * **Poor Prognostic Factors:** Yielding to compulsions (rather than resisting), childhood onset, **presence of tics**, co-morbid depression, and **delusional beliefs** (overvalued ideas). * **Treatment of Choice:** Cognitive Behavioral Therapy (specifically ERP) + SSRIs (at higher doses than used for depression). Clomipramine is the gold standard TCA for OCD.

Question 1

Psychosurgery is used in which of the following conditions?

Accepted Answer

Obsessive-Compulsive Disorder (OCD)

Answer

Phobia

Answer

Generalized anxiety disorder

Answer

Depression

Question 2

All are true about obsession, except:

Accepted Answer

Associated with dim light

Answer

Recurrent foolish thoughts

Answer

Attempts to resist intrusive ideas

Answer

Associated depression

Question 3

An elderly male presents with a history of excessive hand washing and repetitive daily routines. Which of the following is NOT characteristic of obsessions?

Accepted Answer

Intrusive and unwanted mental events

Answer

Repetitive thoughts or urges

Answer

Ego-dystonic nature

Answer

Repetitive behaviors

Question 4

Fixation at the anal stage of psychosexual development can lead to which of the following conditions?

Accepted Answer

Obsessive compulsive disorder

Answer

Anxiety disorders

Answer

Depression

Answer

Schizophrenia

Question 5

Which of the following is NOT a characteristic of obsession?

Accepted Answer

Abstract thinking

Answer

Repetitive behavior

Answer

Ego-dystonic

Answer

Compulsion

Question 6

Ambivalency and ambitendency are typically seen in which of the following conditions?

Accepted Answer

Obsessive-compulsive disorder

Answer

Substance abuse

Answer

Alzheimer's disease

Answer

Schizophrenia

Question 7

A 26-year-old woman presents with extreme distress, stating her life is significantly affected by intrusive thoughts she recognizes as senseless. She experiences repetitive checking behaviors, such as frequently checking the classroom lock and food, and checking envelopes before mailing. She follows strict routines for most activities. Which of the following is NOT a good long-term treatment option for this patient?

Accepted Answer

Diazepam

Answer

Exposure and Response Prevention

Answer

Clomipramine

Answer

Fluoxetine

Question 8

A patient is preoccupied with the perceived defect in her ear size and repeatedly looks into the mirror. She is possibly suffering from which of the following conditions?

Accepted Answer

Body dysmorphic disorder

Answer

Obsessive compulsive disorder

Answer

Normal behavior

Answer

Hypochondriacal delusion

Question 9

Which of the following is a poor prognostic factor for Obsessive-Compulsive Disorder?

Accepted Answer

Decontamination

Answer

Magical thinking

Answer

Pathological doubt

Answer

Hoarding

Question 10

Which defence mechanism explains the "compulsions" observed in a patient with obsessive-compulsive disorder?

Accepted Answer

Undoing

Answer

Reaction formation

Answer

Regression

Answer

Displacement

Obsessive-Compulsive and Related Disorders — MCQs

Obsessive-Compulsive and Related Disorders — MCQs

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