Developmental and Behavioral Pediatrics — MCQs

Developmental and Behavioral Pediatrics Indian Medical PG Practice Questions and MCQs

Question 71: A child having IQ of 25 falls in which category?

A. Needs life support
B. Educable
C. Trainable
D. Dependent (Correct Answer)

Explanation: ***Dependent (Severe to Profound Intellectual Disability)*** - An IQ of 25 falls into the category of **severe intellectual disability** by modern DSM-5 criteria (IQ 20-34), which was historically classified under the **"Dependent"** category. - The older classification system used the term **"Dependent"** to describe individuals with severe to profound intellectual disability (typically IQ <35) who require extensive support in all areas of daily living. - Individuals in this range require **continuous supervision and care** for basic daily activities. *Needs life support* - This term refers to severe physical/medical conditions requiring technological intervention (ventilators, feeding tubes, etc.) to sustain life, not to cognitive classification. - While some individuals with severe intellectual disability may have co-occurring medical conditions, an IQ score alone does not determine need for life support systems. *Educable* - The **"Educable"** category corresponds to **mild intellectual disability** with an **IQ range of 50-70**. - These individuals can achieve academic skills up to approximately 6th-grade level and can live semi-independently or independently with appropriate support. - This term is now largely replaced by "mild intellectual disability" in modern classification. *Trainable* - The **"Trainable"** category refers to **moderate intellectual disability** with an **IQ range of 35-49**. - These individuals can learn self-care skills and simple vocational tasks with supervision but typically do not progress beyond 2nd-grade academic level. - This term is now largely replaced by "moderate intellectual disability" in modern classification.

Question 72: Amongst various treatment modalities for nocturnal enuresis, the relapse rates have been observed to be lowest for:

A. Oxybutynin
B. Imipramine
C. Bell alarm systems (Correct Answer)
D. Desmopressin

Explanation: ***Bell alarm systems*** - **Bell alarm systems** (**enuresis alarms**) work on the principle of classical conditioning, teaching the child to awaken to a full bladder. With long-term use and consistent adherence, they achieve the lowest relapse rates because they address the underlying behavioral and physiological patterns. - These alarms are highly effective in children who have normal bladder capacity but fail to awaken to bladder fullness, leading to a permanent conditioning response. *Oxybutynin* - **Oxybutynin** is an anticholinergic medication that reduces bladder contractility and increases bladder capacity. While it can be effective for some, its use is typically for overactive bladder and not consistently for primary enuresis, and relapse rates can be significant upon discontinuation. - It is often used in combination with other treatments for nocturnal enuresis, especially if there is an underlying detrusor overactivity, but alone it doesn't offer the lowest relapse rates. *Imipramine* - **Imipramine**, a tricyclic antidepressant, works by reducing arousal thresholds during sleep, causing bladder relaxation, and having anticholinergic effects. It is effective in reducing enuretic episodes while on treatment. - However, upon discontinuation, relapse rates are high, often exceeding 50-70%, as it does not address the underlying conditioning for waking up to a full bladder. *Desmopressin* - **Desmopressin** is an antidiuretic hormone analogue that works by reducing nocturnal urine production. It is effective in the short term for reducing bedwetting episodes. - While effective during treatment, its effect is primarily symptomatic, and relapse rates are high once the medication is stopped, as it does not correct the body's natural diurnal rhythm of ADH secretion or train bladder control.

Question 73: Which of the following conditions is most commonly associated with regression of developmental milestones?

A. Rett syndrome (Correct Answer)
B. Autistic regression
C. Neuromuscular disorders
D. Childhood disintegrative disorder

Explanation: ***Rett syndrome*** - This **neurodevelopmental disorder** almost exclusively affects girls and is characterized by a period of normal development (6-18 months) followed by rapid **regression of acquired fine motor, language, and social skills**. - Hallmark features include **loss of purposeful hand movements** (replaced by characteristic hand-wringing or washing stereotypies), **decelerated head growth**, breathing irregularities, and severe cognitive impairment. - While less common than autism, Rett syndrome is the **most characteristically associated** with developmental regression as a defining diagnostic feature. *Autistic regression* - Refers to a subset (15-40%) of children with autism spectrum disorder who experience loss of previously acquired language or social skills, typically between **18 and 36 months of age**. - While regression occurs, the overall pattern differs: **no characteristic hand stereotypies**, **no decelerated head growth**, and variable outcomes with intervention. *Neuromuscular disorders* - Conditions like spinal muscular atrophy or muscular dystrophies primarily affect **motor function** through progressive weakness. - They cause **loss of motor milestones** but typically do not involve regression of **cognitive, language, or social skills** that characterize Rett syndrome. *Childhood disintegrative disorder* - Rare condition involving regression after at least **2 years of normal development** (later onset than Rett syndrome). - Involves loss across multiple domains but affects **both sexes equally** and lacks the characteristic hand stereotypies and breathing abnormalities of Rett syndrome.

Question 74: A 2-year-old child, while playing, gets upset after a toy is taken away. The child begins to cry vigorously, then suddenly loses consciousness and appears pale. There is no significant medical history and the child was otherwise healthy. Which of the following is the most probable diagnosis?

A. Breath holding spell (Correct Answer)
B. Autism spectrum disorder
C. Rett syndrome
D. Attention deficit hyperactivity disorder

Explanation: ***Breath holding spell*** - This condition presents with sudden **loss of consciousness**, often accompanied by **pallor** or cyanosis, in response to an emotional trigger like anger or pain. - It's a common, **benign condition** in young children, occurring in otherwise healthy individuals with no significant medical history. *Autism spectrum disorder* - Characterized by persistent deficits in **social communication** and **interaction**, and restricted, repetitive patterns of behavior, interests, or activities. - It does not involve sudden loss of consciousness or pallor as primary symptoms. *Rett syndrome* - A rare **neurodevelopmental disorder** almost exclusively affecting girls, characterized by normal early development followed by regression in communication, motor skills, and hand movements. - It does not present with sudden episodes of loss of consciousness; rather, it involves a progressive loss of developmental milestones. *Attention deficit hyperactivity disorder* - This is a neurodevelopmental disorder marked by problems with **attention**, **hyperactivity**, and **impulsive behavior**. - It does not involve episodes of sudden loss of consciousness or physical symptoms like pallor.

Question 75: At what age do children typically recognize their gender identity?

A. 4 years
B. 3 years (Correct Answer)
C. 1 year
D. 5 years

Explanation: ***3 years*** - Children typically begin to **recognize and label their own gender identity** and that of others around this age. - At this stage, they understand that they are a boy or a girl, though their understanding of **gender constancy** (that gender doesn't change) is still developing. *1 year* - At this age, infants are developing **basic self-awareness** and starting to recognize themselves as distinct individuals. - However, their cognitive abilities are not yet sufficient for recognizing complex concepts like **gender identity**. *4 years* - While children continue to solidify their understanding of gender around this age, the **initial recognition** usually occurs earlier. - By 4 years, many children also start to develop an understanding of **gender stereotypes**. *5 years* - By this age, most children have a firm grasp of their **gender identity** and have begun to understand **gender constancy**, meaning they know their gender is permanent. - The initial recognition and labeling of gender identity usually happens a couple of years before this.

Question 76: At what age does stranger anxiety typically develop in infants?

A. 3 months
B. 4 months
C. 7 months (Correct Answer)
D. 11 months

Explanation: ***7 months*** - **Stranger anxiety** typically emerges around **6-8 months** of age, peaking around 9-12 months. - This developmental stage reflects the infant's growing ability to distinguish between familiar and unfamiliar faces and their developing **attachment to primary caregivers**. *3 months* - At 3 months, infants are typically in an earlier stage of social development, primarily focusing on **recognizing primary caregivers** and showing social smiles. - They generally do not exhibit stranger anxiety, as their cognitive and emotional development has not yet reached that milestone. *4 months* - While 4-month-olds are becoming more socially aware and responsive, their **object permanence** and ability to differentiate strangers from familiar faces is still developing. - Therefore, definitive stranger anxiety is typically not observed at this age. *11 months* - By 11 months, stranger anxiety has already developed and is usually **at its peak**, as infants at this age have a well-established sense of who their primary caregivers are. - While stranger anxiety is very prominent at this age, it is not when it typically **develops** (initial emergence), but rather when it is most pronounced.

Question 77: At what age do children typically begin to use past and present tense in their speech?

A. 18 Months
B. 1 Year
C. 2 Years
D. 30 Months (Correct Answer)

Explanation: ***30 Months*** - Around 30 months (2.5 years), children typically begin to comprehend and produce **simple past and present tense forms**. - This stage reflects an increased understanding of **time concepts** and more complex grammatical structures. *1 Year* - At 1 year, children are usually at the **single-word stage**, using vocabulary like 'mama' or 'dada'. - They are primarily focused on **naming objects and people**, with little to no grasp of verb tenses. *2 Years* - By 2 years, children are generally using **two-word phrases** and beginning to combine words into simple sentences. - While they are expanding their vocabulary, consistent use of distinct past and present tenses is still developing. *18 Months* - Children at 18 months are typically expanding their **single-word vocabulary** and may be starting to use two-word combinations. - Their language is still focused on immediate needs and objects, without the grammatical complexity of verb tenses.

Question 78: Which of the following is NOT a treatment option for nocturnal enuresis?

A. Imipramine
B. Behavioral therapy with alarm setup
C. Voiding of urine before sleeping
D. Immediate surgical intervention (Correct Answer)

Explanation: ***Immediate surgical intervention*** - **Nocturnal enuresis** is primarily managed with conservative measures or medication; surgical intervention is almost never indicated unless there is an underlying anatomical defect causing the enuresis, which is rare. - This is an **invasive approach** typically reserved for structural abnormalities of the urinary tract, not for functional enuresis. *Imipramine* - **Imipramine**, a tricyclic antidepressant, is sometimes used for nocturnal enuresis due to its anticholinergic and alpha-adrenergic effects, which can increase **bladder capacity** and reduce bladder contractions. - It's considered a secondary pharmacological option when other first-line treatments are insufficient. *Behavioral therapy with alarm setup* - **Bedwetting alarms** are a highly effective first-line treatment, working on conditioning principles to train the child to wake up when bladder sensation occurs. - This behavioural approach is focused on teaching the child to recognize a full bladder and to respond to it. *Voiding of urine before sleeping* - **Scheduled voiding**, particularly just before bedtime, is a common and simple behavioral modification that can help reduce the frequency of nocturnal enuresis episodes. - This strategy aims to ensure the bladder is as empty as possible at the start of the sleep cycle.

Question 79: In which condition is a stimulant drug commonly prescribed for children?

A. Obstructive Sleep Apnea
B. Conduct Disorder
C. Narcolepsy
D. Attention Deficit Hyperactivity Disorder (ADHD) (Correct Answer)

Explanation: ***Attention Deficit Hyperactivity Disorder (ADHD)*** - **Stimulant medications** (methylphenidate, amphetamines) are the **first-line pharmacologic treatment** for ADHD in children and represent the **most common indication** for stimulant use in pediatrics. - These drugs improve **focus**, reduce **hyperactivity**, and decrease **impulsivity** by increasing **dopamine** and **norepinephrine** levels in the brain. - ADHD affects approximately **5-10% of children**, making stimulant prescriptions extremely common in pediatric practice. *Narcolepsy* - While stimulants (methylphenidate, modafinil) are **indicated** for pediatric narcolepsy to treat excessive daytime sleepiness, this condition is **rare in children** (prevalence <0.05%). - Narcolepsy typically presents with **irresistible sleep attacks**, **cataplexy** (sudden muscle weakness with emotions), and other features. - Though stimulants are appropriate treatment, the **low prevalence** makes this a much less common indication than ADHD. *Obstructive Sleep Apnea* - Primary treatment involves addressing the **airway obstruction** through **adenotonsillectomy** in children or **CPAP** therapy. - **Stimulants are not indicated** for OSA and could potentially worsen cardiovascular complications. - Treating the underlying sleep disorder is essential, not masking daytime sleepiness with stimulants. *Conduct Disorder* - Characterized by **persistent aggressive and defiant behaviors** violating societal norms. - Primary treatment is **psychotherapy** and **behavioral interventions**, not pharmacotherapy. - Stimulants are **not effective** for core conduct disorder symptoms unless there is **comorbid ADHD**.

Question 80: Best treatment for nocturnal enuresis is

A. Positive reinforcement
B. Punishment
C. Bed alarm (Correct Answer)
D. Desmopressin

Explanation: ***Bed alarm*** - **Bed alarms** are considered the most effective long-term treatment for nocturnal enuresis by conditioning the child to wake up to a full bladder. - This method has a high success rate and a lower relapse rate compared to pharmacological treatments. *Positive reinforcement* - While helpful for building confidence and encouraging adherence to treatment, **positive reinforcement** alone is generally not sufficient to cure nocturnal enuresis. - It works best as an adjunct to other established treatments, like bed alarms, to motivate the child. *Punishment* - **Punishment** is not an effective or appropriate treatment for nocturnal enuresis and can be psychologically harmful to the child. - Enuresis is an involuntary condition, and punishment can lead to increased stress, anxiety, and shame, potentially worsening the problem. *Desmopressin* - **Desmopressin** (DDAVP) is a synthetic analog of antidiuretic hormone and can reduce urine production at night, offering a short-term solution. - It is effective in reducing the frequency of wet nights but has a higher relapse rate once discontinued, and it does not cure the underlying problem like a bed alarm does.

Practice by Chapter

Normal Development and Variations

Practice Questions

Developmental Delay and Intellectual Disability

Practice Questions

Autism Spectrum Disorders

Practice Questions

Attention Deficit Hyperactivity Disorder

Practice Questions

Learning Disabilities

Practice Questions

Language and Speech Disorders

Practice Questions

Motor Disorders

Practice Questions

Behavioral Problems in Young Children

Practice Questions

Sleep Disorders

Practice Questions

Mood and Anxiety Disorders

Practice Questions

Psychosomatic Disorders

Practice Questions

Developmental Surveillance and Screening

Practice Questions

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