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.