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Autism screening — USMLE Step 3 MCQ

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HardPediatrics (well-child, chronic management)Autism screeningUSMLE Step 3

An 18-month-old walks independently, uses several words, and has no developmental concern on history or examination. Which preventive assessment remains indicated?

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Correct answer: C — Administer a validated autism-specific screening tool at this visit

Autism-specific screening is recommended at 18 and 24 months even when development appears typical. The alternatives either delay structured screening or use unsuitable tests.

Reference: American Academy of Pediatrics, Developmental Surveillance and Screening: https://www.aap.org/en/patient-care/developmental-surveillance-and-screening-patient-care/