Family Medicine · Year 3 · from Family Medicine

Case 1: Well-Child Visit with Developmental Concern

Patient Demographics

  • Age: 18 months old
  • Sex: Male
  • Parents: Both present, first-time parents

Chief Complaint

Mother: "He's not saying any words yet. His cousin who is the same age is already talking."

History of Present Illness

Baby Jacob is an 18-month-old boy presenting for his routine well-child visit. His mother expresses concern that he is not yet speaking any words. She notes that he babbles with consonant sounds ("bababa," "dadada") but has no specific words with meaning. He does not say "mama" or "dada" directed at his parents. He does not point to objects he wants; instead, he takes his mother's hand and leads her to what he wants. He does not wave bye-bye. He responds to his name about half the time. He enjoys looking at books but does not point to pictures when asked. He plays by himself, lining up his toy cars in rows, and gets upset if they are moved.

Birth and Developmental History

  • Born full-term via uncomplicated vaginal delivery
  • Birth weight 7 lbs 8 oz
  • No NICU stay
  • Passed newborn hearing screen
  • Gross Motor: Walked at 13 months, now runs and climbs
  • Fine Motor: Stacks 2-3 blocks, scribbles with crayon
  • Language: Babbles but no words
  • Social: Inconsistent eye contact, prefers to play alone

Past Medical History

  • No significant medical problems
  • No hospitalizations
  • Immunizations up to date

Family History

  • Father's younger brother: Autism spectrum disorder
  • No other developmental concerns in family

Social History

  • Lives with both parents
  • No daycare (stay-at-home mom)
  • No screen time exposure
  • No siblings

Physical Examination

  • Vital Signs: Weight 25 lbs (50th percentile), Height 32 inches (50th percentile), Head circumference 48 cm (75th percentile)
  • General: Active toddler, does not make eye contact with examiner
  • HEENT: TMs clear bilaterally, red reflexes present
  • Cardiovascular: Regular rhythm, no murmur
  • Neurological: Normal muscle tone, symmetric movements, no focal deficits
  • Behavior during exam: Does not look at examiner's face; focused on spinning wheels of toy car; becomes distressed when toy removed

Developmental Screening

M-CHAT-R/F (Modified Checklist for Autism in Toddlers, Revised with Follow-up):

  • Failed 5 items (high-risk score)
  • Key failed items:
  • Does not point to show you something interesting
  • Does not follow a point
  • Does not look at you when you call his name
  • Does not bring objects to show you
  • Does not try to get you to watch him

Clinical Image

Image: Developmental milestones chart showing expected language, motor, and social skills from birth to 24 months, with red flags highlighted for each age.

Image Source: Wikimedia Commons Attribution: CDC, Public Domain URL: https://commons.wikimedia.org/wiki/File:Child_development_milestones.png

Assessment and Diagnosis

  1. Positive autism screening (M-CHAT-R/F) - requires further evaluation
  2. Language delay - no words at 18 months (expected: 10-25 words)
  3. Social communication concerns - reduced eye contact, no pointing, no joint attention
  4. Restricted/repetitive behaviors - lining up toys, distress when routine disrupted

Red Flags Identified

  • No words by 16 months
  • No pointing by 12 months (still absent at 18 months)
  • No pretend play
  • Does not respond consistently to name
  • Reduced eye contact
  • Family history of ASD (first-degree relative)

Management Plan

Immediate Referrals (do not wait):

  1. Audiology evaluation - hearing test required for any child with language delay
  2. Early Intervention Program - state-funded services for children 0-3 with developmental delays
  • Referral made today
  • Services can begin while awaiting formal diagnosis
  1. Developmental Pediatrics or Autism specialty evaluation - for comprehensive diagnostic assessment
  • Waitlists can be long (3-12 months); refer immediately
  1. Speech-Language Pathology - through Early Intervention

Parent Counseling:

  • Validated parents' concerns
  • Explained that early screening identifies children who need further evaluation - positive screen does not equal diagnosis
  • Emphasized importance of early intervention: intensive behavioral therapy before age 3 produces best outcomes
  • Provided resources: Autism Speaks, local support groups
  • Reassured that seeking help early is the right decision

While Awaiting Evaluation:

  • Encourage face-to-face interaction during play
  • Narrate activities throughout the day
  • Limit screen time (AAP: avoid before 18-24 months except video chat)
  • Follow child's interests but expand play variety
  • Continue regular pediatric visits

Follow-Up

  • Phone call in 1 week to check on referral progress
  • Return visit in 1 month
  • Ensure Early Intervention has made contact within 2 weeks

Teaching Points

  1. Universal autism screening at 18 and 24 months is recommended per AAP using M-CHAT-R/F
  1. Red flags that require immediate referral:
  • No babbling by 12 months
  • No pointing or gestures by 12 months
  • No single words by 16 months
  • No 2-word phrases by 24 months
  • ANY loss of language or social skills at any age
  1. Hearing evaluation is mandatory for any child with language delay - hearing loss is a treatable cause
  1. Early intervention is critical - services should begin as soon as delay is identified, not after formal diagnosis
  1. Family history of ASD increases risk - siblings of children with ASD have 10-20% risk
  1. Joint attention deficits (pointing to share interest, following a point) are early markers of ASD

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