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Difficulty: HardChildhood and Neurodevelopmental Disorders

A 30-month-old boy is brought to the pediatrician by his parents due to concerns regarding his language development. The parents report that he uses approximately 10 single words and does not combine them into phrases. When he desires a snack, he physically guides his father's hand to the pantry rather than pointing or vocalizing his request. He rarely makes eye contact when his name is called. The parents also note that he becomes severely agitated and inconsolable if his daily routine is altered, such as taking a different driving route to the grocery store. On physical examination, the boy is able to jump in place, walk up stairs while holding the handrail, and stack a tower of seven blocks. A comprehensive audiology evaluation performed last week revealed normal hearing bilaterally. Based on the patient's presentation, which of the following statements regarding his developmental status and management are accurate? (Select all that apply)

  1. The patient's deficits in social communication and his restricted, repetitive patterns of behavior are highly characteristic of Autism Spectrum Disorder.Answer
  2. B
    The patient's ability to construct a tower of only seven blocks represents a clinically significant fine motor delay for his age.
  3. Early intervention services focusing on behavioral therapies and speech-language pathology should be initiated as the primary management strategy.Answer
  4. D
    The patient's limited expressive vocabulary is an expected developmental finding for a 30-month-old child, warranting only watchful waiting.
  5. The patient's gross motor achievements, including jumping in place and stair climbing, are age-appropriate developmental milestones.Answer

Answer

The correct statements recognize that the patient has core symptoms of Autism Spectrum Disorder, that early behavioral and speech interventions are indicated, and that his gross motor milestones are currently age-appropriate.
The patient displays classic signs of Autism Spectrum Disorder, which include deficits in social reciprocity (poor eye contact), impaired nonverbal communication (using a parent's hand instead of pointing), and an insistence on sameness (inconsolable agitation with minor routine changes). Furthermore, his motor skills are completely intact; jumping in place, walking up stairs, and stacking a 7-block tower are normal, age-appropriate milestones for a 30-month-old child. Because early intervention significantly improves long-term outcomes, prompt initiation of comprehensive behavioral therapies and speech-language pathology is the standard of care.

Step-by-Step Solution

1
Analyze the patient's language and social development.
The patient exhibits severe expressive language delay (10 words at 30 months) and significant social deficits (lack of joint attention, poor eye contact).
Identifying specific deficits helps differentiate global developmental delay from domain-specific neurodevelopmental disorders.
2
Evaluate the patient's motor development.
The patient's gross motor skills (jumping in place, stair climbing) and fine motor skills (7-block tower) are on track for a 30-month-old.
Intact motor development alongside severe language/social deficits points away from a global developmental delay.
3
Synthesize the clinical findings with diagnostic criteria.
The combination of social communication deficits and restricted, repetitive behaviors (routine agitation) in the setting of normal hearing and normal motor skills confirms Autism Spectrum Disorder.
Diagnosis of Autism Spectrum Disorder relies on observing these core clinical deficits during the early developmental period.
4
Determine the most appropriate management.
Immediate referral for early intervention, including applied behavior analysis and speech therapy, is required.
Early, intensive interventions significantly improve long-term functional and communicative outcomes.

Key Concept

Diagnosis and management of Autism Spectrum Disorder, and differentiation of normal versus delayed pediatric developmental milestones.
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Topics

Childhood and Neurodevelopmental Disorders

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