What are the Early Signs of Autism in Toddlers at 18 Months?

Identifying early signs of autism when a child is around 18 months old involves monitoring social, communication, and behavioral milestones. According to CDC guidelines and expert insights, key indicators to watch for at this developmental stage include:

Social and Communication Red Flags:

  • Limited or no eye contact during interactions.
  • Lack of response to their name by 12 months or older.
  • No single words by 16 months of age.
  • Lack of pointing to show interest in objects or sharing joint attention (e.g., not showing you a toy with a smile).
  • Absence of social smiles or reciprocal smiling when a parent smiles first.
  • Limited use of gestures like waving or babbling.

Behavioral and Sensory Indicators:

  • Repetitive movements such as hand-flapping, rocking, or spinning objects.
  • Intense focus on specific objects or lining up toys in perfect rows.
  • Unusual or extreme reactions to sensory inputs like sounds, smells, or textures.
  • Atypical play patterns, such as a lack of pretend play or preferring to play alone rather than engaging with peers.

If you notice these patterns, healthcare providers recommend a professional consultation and an in-home assessment to determine if early intervention services like ABA therapy could support your child’s developmental progress.


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