Child and Adolescent Psychiatry — MCQs

Child and Adolescent Psychiatry Indian Medical PG Practice Questions and MCQs

Question 91: Tics, hair pulling, and nail biting can be treated by which of the following methods?

A. Mindfulness
B. Social habit treatment
C. Habit reversal training (Correct Answer)
D. No intervention required

Explanation: **Explanation:** **Habit Reversal Training (HRT)** is the gold-standard behavioral intervention for repetitive, impulse-driven behaviors known as "body-focused repetitive behaviors" (BFRBs) and tic disorders. The core concept involves increasing the patient's awareness of the urge (premonitory urge) and teaching them to perform a **competing response**—a physically incompatible action (e.g., clenching fists instead of hair pulling) that prevents the habit until the urge subsides. * **Why Option C is correct:** HRT is specifically indicated for **Tourette syndrome/Tics**, **Trichotillomania** (hair pulling), and **Onychophagia** (nail biting). It consists of five components: awareness training, competing response training, contingency management, relaxation training, and generalization training. * **Why Option A is incorrect:** While Mindfulness can reduce the stress that exacerbates these conditions, it is not the primary or specific treatment for the motor habits themselves. * **Why Option B is incorrect:** "Social habit treatment" is not a recognized clinical term or standardized psychiatric intervention. * **Why Option D is incorrect:** These conditions often cause significant distress, social impairment, or physical injury (e.g., infections from nail biting or permanent alopecia), thus requiring active clinical intervention. **High-Yield Clinical Pearls for NEET-PG:** * **Trichotillomania:** Classified under "Obsessive-Compulsive and Related Disorders" in DSM-5. * **Pharmacotherapy:** If HRT is insufficient, **SSRIs** are used for Trichotillomania, while **Alpha-2 agonists** (Clonidine/Guanfacine) or **Antipsychotics** (Risperidone/Haloperidol) are used for Tics. * **CBIT:** Comprehensive Behavioral Intervention for Tics (CBIT) is the broader framework that includes HRT as its primary component.

Question 92: The incidence of mental illness is the maximum if the causal factors affect which particular period of life?

A. Perinatal period
B. First five years of life (Correct Answer)
C. School age
D. Adolescence

Explanation: **Explanation:** The **first five years of life** are considered the most critical period for neurodevelopment. During this window, the brain undergoes rapid synaptogenesis, myelination, and pruning. This period is characterized by high **neuroplasticity**, making the developing brain exceptionally vulnerable to environmental stressors, nutritional deficiencies, and emotional trauma. Adverse Childhood Experiences (ACEs) during these formative years can lead to permanent structural and functional changes in the brain (particularly the HPA axis and limbic system), significantly increasing the lifetime risk of various mental illnesses, including anxiety, depression, and personality disorders. **Analysis of Options:** * **Perinatal period:** While complications here (like hypoxia or infections) are linked to neurodevelopmental disorders like Intellectual Disability or Cerebral Palsy, the broader spectrum of psychiatric morbidity is more heavily influenced by the cumulative environmental and social interactions occurring throughout the first five years. * **School age:** By this stage, the core architecture of the brain is already established. While social stressors here are important, they are less likely to cause the foundational developmental shifts seen in earlier years. * **Adolescence:** This is a peak period for the *onset* of symptoms (e.g., Schizophrenia, Bipolar Disorder), but the underlying vulnerability or "causal factors" often trace back to early childhood development. **High-Yield Clinical Pearls for NEET-PG:** * **Critical Period:** A developmental stage during which the nervous system is especially sensitive to environmental stimuli. * **Bowlby’s Attachment Theory:** Emphasizes that maternal deprivation during the first few years can lead to "Affectionless Psychopathy" and permanent emotional scarring. * **Neuroplasticity:** Is maximal in early childhood and decreases with age, explaining why early intervention is most effective.

Question 93: Tics, hair pulling, and nail biting can be treated by?

A. Mindfulness
B. Social habit training
C. Habit and response prevention
D. No intervention required (Correct Answer)

Explanation: ### Explanation The correct answer is **D. No intervention required.** In child psychiatry, transient habits such as mild tics, hair pulling (trichotillomania), and nail biting (onychophagia) are frequently encountered during normal development. Most of these behaviors are **self-limiting** and often represent a child’s way of coping with minor stress or boredom. **Why "No intervention required" is correct:** Medical intervention is only indicated if these behaviors are persistent (lasting >1 year), cause significant functional impairment, or result in physical injury (e.g., skin infections or permanent hair loss). In the majority of pediatric cases, these habits resolve spontaneously without formal therapy. The first line of management is usually **watchful waiting** and parental reassurance to avoid drawing negative attention to the habit, which can inadvertently reinforce it. **Analysis of Incorrect Options:** * **A. Mindfulness:** While useful for anxiety disorders, it is not a primary or standard treatment for childhood habit disorders. * **B. Social habit training:** This is not a recognized clinical term in standard psychiatric management. * **C. Habit and response prevention:** This likely refers to **Habit Reversal Training (HRT)** or **Exposure and Response Prevention (ERP)**. While HRT is the "gold standard" behavioral treatment for Tourette’s or severe Trichotillomania, it is reserved for clinical-grade disorders, not the transient habits implied in the question. **NEET-PG High-Yield Pearls:** * **Tics:** Transient Tic Disorder is diagnosed if symptoms last <12 months. Tourette’s requires both multiple motor tics and at least one vocal tic for >1 year. * **Nail Biting:** Peak incidence is between ages 7–10; it is rarely considered pathological unless severe. * **Pharmacotherapy:** If tics require medication (due to distress), **Alpha-2 agonists (Clonidine)** or **Atypical Antipsychotics (Risperidone)** are preferred over Haloperidol.

Question 94: All are true about Attention-Deficit/Hyperactivity Disorder (ADHD) except?

A. Methylphenidate is the drug of choice for ADHD.
B. Symptoms should be present in more than one setting.
C. Symptoms should be present before 7 years of age for diagnosis.
D. Symptoms should be present before 12 years of age for diagnosis. (Correct Answer)

Explanation: **Explanation:** The correct answer is **D**, but it is important to note that this question is framed as an "Except" question. In the context of current diagnostic criteria (DSM-5), the statement "Symptoms should be present before 12 years of age" is actually **true**, while the older DSM-IV criteria required onset before **7 years**. In many competitive exams like NEET-PG, questions may still reference older criteria or contain errors in the "Except" framing. However, based on the provided key, the focus is on the transition of the age cutoff. 1. **Why Option C/D is the focus:** Under **DSM-IV**, the age of onset for symptoms was required to be before **7 years**. However, **DSM-5** (the current standard) updated this to **12 years** because many children exhibit significant impairment later in childhood. Therefore, Option C is now outdated/incorrect, and Option D is the current clinical standard. 2. **Analysis of other options:** * **Option A:** **Methylphenidate** (a CNS stimulant) remains the **first-line pharmacological treatment** (Drug of Choice) for ADHD in children and adolescents. It works by increasing synaptic dopamine and norepinephrine. * **Option B:** For a diagnosis of ADHD, symptoms of inattention or hyperactivity-impulsivity must be present in **two or more settings** (e.g., at home, school, with friends, or in other activities) to ensure the behavior is a pervasive trait rather than a reaction to a specific environment. **High-Yield Clinical Pearls for NEET-PG:** * **Core Symptoms:** Inattention, Hyperactivity, and Impulsivity. * **Duration:** Symptoms must persist for at least **6 months**. * **Non-Stimulant DOC:** **Atomoxetine** (Selective NE reuptake inhibitor) is used if stimulants are contraindicated or if there is a risk of diversion/abuse. * **Common Comorbidity:** Oppositional Defiant Disorder (ODD) is the most common comorbid condition. * **Adult ADHD:** Symptoms can persist into adulthood, though hyperactivity often diminishes while inattention remains.

Question 95: A 3-year-old child has normal developmental milestones except for delayed language development (poor speech development). The child has difficulty with concentration, communication, and making friends, and spends time fixated on their own hands. What is the most probable diagnosis?

A. Autism (Correct Answer)
B. Attention-Deficit/Hyperactivity Disorder (ADHD)
C. Specific learning disability
D. Intellectual disability

Explanation: ### Explanation The clinical presentation describes a classic case of **Autism Spectrum Disorder (ASD)**. The diagnosis is based on a triad of core deficits: 1. **Impaired Social Interaction:** Difficulty making friends and poor social reciprocity. 2. **Communication Deficits:** Delayed language development and poor speech. 3. **Restricted/Repetitive Behaviors:** Fixation on their own hands (stereotypical movements/self-stimulatory behavior). In ASD, developmental milestones are often normal in the motor domain, but social and language milestones are significantly delayed, typically becoming apparent before age 3. **Why the other options are incorrect:** * **ADHD:** While it involves poor concentration, it does not typically present with significant language delay or the profound social-communication deficits and repetitive behaviors seen here. * **Specific Learning Disability (SLD):** This diagnosis is usually made in school-aged children (6+ years) who have difficulty with specific academic skills (reading/writing) despite having a normal IQ. It does not explain social withdrawal or hand fixation. * **Intellectual Disability (ID):** While ID can coexist with Autism, it involves a global delay in *all* developmental milestones (motor, social, and cognitive). The question specifies that other milestones were normal, pointing specifically toward Autism. **High-Yield Clinical Pearls for NEET-PG:** * **M-CHAT:** The Modified Checklist for Autism in Toddlers is the most commonly used screening tool (16–30 months). * **Early Signs:** Lack of joint attention (not pointing at objects), failure to respond to name, and poor eye contact. * **Prognosis:** The best predictors of long-term outcome in Autism are the **level of IQ** and the **development of communicative language** by age 5.

Question 96: What is the most common infection associated with PANDAS?

A. Streptococcus pyogenes (Correct Answer)
B. Staphylococcus aureus
C. Streptococcus pneumoniae
D. Mycobacterium tuberculosis

Explanation: **Explanation:** **PANDAS** stands for **Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infections**. The correct answer is **Streptococcus pyogenes** (Option A), also known as Group A Beta-Hemolytic Streptococcus (GABHS). The underlying pathophysiology involves **molecular mimicry**, where antibodies produced against the streptococcal cell wall cross-react with the host’s neuronal tissues, specifically the **basal ganglia**. This autoimmune response triggers the sudden, "overnight" onset of Obsessive-Compulsive Disorder (OCD) or tic disorders in children. **Analysis of Incorrect Options:** * **Staphylococcus aureus (Option B):** While a common cause of pediatric skin and soft tissue infections, it is not linked to the specific autoimmune cross-reactivity seen in PANDAS. * **Streptococcus pneumoniae (Option C):** This is a common cause of pneumonia and meningitis but lacks the specific M-protein antigens that trigger the rheumatic-like autoimmune response associated with PANDAS. * **Mycobacterium tuberculosis (Option D):** TB can cause CNS infections (Tuberculoma/Meningitis), but it presents with chronic constitutional symptoms rather than acute-onset neuropsychiatric symptoms. **High-Yield Clinical Pearls for NEET-PG:** * **Diagnostic Criteria:** Sudden onset of OCD/Tics + Prepubertal age + Temporal association with GABHS infection (confirmed by throat culture or elevated ASO/Anti-DNase B titers) + Neurological abnormalities (e.g., hyperactivity or choreiform movements). * **Key Structure:** The **Basal Ganglia** (specifically the caudate nucleus) is the primary site of involvement. * **Differential Diagnosis:** **Sydenham’s Chorea** (a major Jones criterion for Rheumatic Fever) also involves GABHS and the basal ganglia but presents with purposeless, involuntary movements rather than primary psychiatric symptoms. * **Treatment:** Primarily psychiatric management (SSRIs/CBT) and treating the active infection with antibiotics. Severe cases may require IVIG or plasmapheresis.

Question 97: Callous and unemotional traits (CU), which include disregard for others, lack of empathy, and generally deficient affect, are considered as a specifier for which disorder in DSM-5?

A. Borderline Personality disorder
B. Histrionic Personality disorder
C. Conduct disorder (Correct Answer)
D. Oppositional defiant disorder

Explanation: **Explanation:** In **DSM-5**, the specifier **"With Limited Prosocial Emotions"** was added to the diagnosis of **Conduct Disorder (CD)**. This specifier specifically describes individuals who exhibit **Callous and Unemotional (CU) traits**. To meet this criteria, a child must persistently display at least two of the following: lack of remorse or guilt, callousness (lack of empathy), unconcern about performance, and shallow or deficient affect. **Why Conduct Disorder is correct:** CU traits identify a distinct subgroup of children with Conduct Disorder who exhibit more severe, aggressive, and stable patterns of antisocial behavior. These traits are considered precursors to **Antisocial Personality Disorder** in adulthood. Identifying this specifier is crucial because these patients often require different therapeutic approaches compared to those with standard CD. **Why other options are incorrect:** * **Borderline & Histrionic Personality Disorders:** These are Cluster B personality disorders diagnosed in adults (usually >18 years). While they involve emotional dysregulation, they do not utilize the "CU traits" specifier. * **Oppositional Defiant Disorder (ODD):** While ODD often precedes Conduct Disorder, it is characterized by moodiness, defiance, and vindictiveness rather than the predatory, callous, and unemotional behavior seen in the CD specifier. **High-Yield Pearls for NEET-PG:** * **Age Criteria:** Conduct Disorder is diagnosed in individuals <18 years. If the behavior persists after 18, the diagnosis shifts to **Antisocial Personality Disorder**. * **Core Triad:** Historically, the "MacDonald Triad" (enuresis, fire-setting, and animal cruelty) was linked to later sociopathy, though its predictive validity is now debated. * **Neurobiology:** CU traits are often associated with **amygdala hypo-reactivity** to distress cues in others.

Question 98: Which of the following Autism Spectrum Disorders is characterized by normal IQ and language skills?

A. Rett's syndrome
B. Asperger's syndrome (Correct Answer)
C. Heller's syndrome
D. Munchausen syndrome

Explanation: **Explanation:** **Asperger’s Syndrome** (Option B) is the correct answer. Under the previous DSM-IV classification, it was distinguished from Autistic Disorder by the **absence of clinically significant delays in language development, cognitive development, or age-appropriate self-help skills.** Children with Asperger’s typically have an average to above-average IQ and fluent speech, though they struggle significantly with social reciprocity and exhibit restricted, repetitive patterns of behavior. In DSM-5, this is now subsumed under the broader category of **Autism Spectrum Disorder (ASD) Level 1.** **Incorrect Options:** * **Rett’s Syndrome (A):** A genetic neurodevelopmental disorder (MECP2 mutation) primarily affecting females. It is characterized by a period of normal development followed by a loss of purposeful hand skills (replaced by stereotypic hand-wringing), decelerated head growth, and **severe intellectual disability.** * **Heller’s Syndrome (C):** Also known as **Childhood Disintegrative Disorder (CDD).** It involves at least two years of normal development followed by a dramatic loss of previously acquired skills (language, social, motor). It is associated with **severe intellectual impairment.** * **Munchausen Syndrome (D):** A psychiatric disorder (Factitious Disorder) where a person feigns or induces physical or psychological symptoms for primary gain (the "sick role"). It is not an Autism Spectrum Disorder. **High-Yield Clinical Pearls for NEET-PG:** * **Asperger’s vs. Autism:** The "defining" difference is the **lack of speech delay** in Asperger’s. * **Social Deficit:** Patients with Asperger’s often want to socialize but lack the "social intuition" to do so effectively (the "eccentric professor" profile). * **DSM-5 Update:** Autistic Disorder, Asperger’s, and CDD are now all merged into **Autism Spectrum Disorder.** Rett’s Syndrome is now considered a separate neurological entity.

Question 99: A 10-year-old boy is constantly restless. In school, his behavior makes it difficult for the rest of the class to concentrate. He is rarely in his seat at home or school and has trouble playing quietly. He does not seem to listen to his mother. What is the most likely diagnosis?

A. Attention-deficit hyperactivity disorder (Correct Answer)
B. Conduct disorder
C. Depressive disorder
D. Schizophrenia

Explanation: ### **Explanation** The clinical presentation of this 10-year-old boy—characterized by constant restlessness, inability to remain seated, difficulty playing quietly, and appearing not to listen—is a classic description of **Attention-Deficit Hyperactivity Disorder (ADHD)**. **1. Why ADHD is the Correct Answer:** ADHD is a neurodevelopmental disorder defined by a persistent pattern of **inattention** and/or **hyperactivity-impulsivity** that interferes with functioning or development. According to DSM-5 criteria, symptoms must be present in **two or more settings** (e.g., home and school) and have persisted for at least 6 months. This patient exhibits "on-the-go" behavior (hyperactivity) and failure to follow instructions/listen (inattention), which disrupts his social and academic environment. **2. Why Other Options are Incorrect:** * **Conduct Disorder:** Characterized by a repetitive pattern of violating the basic rights of others or major age-appropriate societal norms (e.g., aggression, theft, or cruelty). This patient shows restlessness, not antisocial or malicious behavior. * **Depressive Disorder:** In children, this may present as irritability or "masked depression," but it typically involves a change in mood, sleep disturbances, and loss of interest, rather than chronic motor hyperactivity. * **Schizophrenia:** Extremely rare at age 10; it involves "positive symptoms" like hallucinations and delusions or "negative symptoms" like social withdrawal, which are absent here. **3. NEET-PG High-Yield Pearls:** * **Age of Onset:** Symptoms must be present before **12 years of age**. * **Gender:** More common in **males** (approx. 3:1 ratio). * **First-line Pharmacotherapy:** **Methylphenidate** (a CNS stimulant that blocks dopamine and norepinephrine reuptake). * **Non-stimulant alternative:** **Atomoxetine** (Selective NE reuptake inhibitor). * **Comorbidity:** High association with Oppositional Defiant Disorder (ODD) and Learning Disorders.

Question 100: What is the IQ range historically defined as 'imbecile'?

A. 70-80
B. 50-69
C. 20-49 (Correct Answer)
D. 0-20

Explanation: ### Explanation The question refers to the historical classification of Intellectual Disability (formerly Mental Retardation), which was widely used before the adoption of modern ICD and DSM terminologies. **Why Option C is Correct:** Historically, the term **'Imbecile'** was used to describe individuals with an **IQ range of 20–49**. In modern clinical practice (ICD-10), this range corresponds to **Moderate Intellectual Disability** (IQ 35–49) and the upper end of **Severe Intellectual Disability** (IQ 20–34). Individuals in this category were considered capable of learning simple tasks under supervision but generally unable to live independently. **Analysis of Incorrect Options:** * **Option A (70–80):** This range is classified as **Borderline Intelligence**. These individuals are below average but do not meet the diagnostic criteria for Intellectual Disability (which requires an IQ < 70). * **Option B (50–69):** Historically termed **'Moron'**, this corresponds to **Mild Intellectual Disability**. These individuals are often "educable" and can achieve social and vocational adequacy with support. * **Option D (0–20):** Historically termed **'Idiot'**, this corresponds to **Profound Intellectual Disability**. These individuals require constant supervision and nursing care for basic survival. **High-Yield Clinical Pearls for NEET-PG:** * **Modern Classification (ICD-10):** * Mild: 50–69 (Most common, ~85%) * Moderate: 35–49 * Severe: 20–34 * Profound: < 20 * **Educability:** Mild ID is "Educable," Moderate ID is "Trainable." * **Diagnosis:** Diagnosis requires both an IQ < 70 and deficits in **adaptive functioning** manifesting before age 18. * **Most Common Cause:** Genetic (Down Syndrome is the most common chromosomal cause; Fragile X is the most common inherited cause).

Practice by Chapter

Normal Child Development

Practice Questions

Intellectual Developmental Disorder

Practice Questions

Autism Spectrum Disorders

Practice Questions

Attention-Deficit/Hyperactivity Disorder

Practice Questions

Conduct Disorder

Practice Questions

Oppositional Defiant Disorder

Practice Questions

Anxiety Disorders in Children

Practice Questions

Depression in Children and Adolescents

Practice Questions

Psychosis in Children and Adolescents

Practice Questions

Learning Disorders

Practice Questions

Child Abuse and Neglect

Practice Questions

Family Therapy Approaches

Practice Questions

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