Early identification of autism spectrum disorder (ASD) can make a significant difference in a child’s development. If you’re noticing certain behaviors in your child that seem different from typical development, trust your instincts—it’s okay to ask questions.

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Here are some common signs of autism to watch for by age group:

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Early Signs (12–24 Months):

• Limited or no eye contact

• Lack of babbling, gestures (like pointing or waving), or first words

• Doesn’t respond to their name

• Limited interest in people or play

• Repetitive behaviors (hand-flapping, rocking, spinning objects)

• Strong attachment to routines or resistance to change

Preschool and Early Childhood (Ages 2–5):

• Delayed speech or language skills

• Difficulty understanding social cues or emotions

• Prefers playing alone or doesn’t engage in pretend play

• Unusual sensitivity to sound, texture, or light

• Fixation on specific topics or toys

School-Age and Beyond:

• Difficulty making or keeping friends

• Trouble with back-and-forth conversation

• Rigid thinking or inflexible routines

• Repetitive language or echolalia (repeating phrases)

If your child exhibits some of these signs and you have concerns, discuss your concerns with your pediatrician or family doctor.

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Click below to download a file for the Early Childhood Diagnosis Info Form to learn more! (Form from ASERT paautism.org)

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This information was developed by the Autism Services, Education, Resources, and Training Collaborative (ASERT). For more information, please contact ASERT at 877-231-4244 or info@PAautism.org. ASERT is funded by the Bureau of Supports for Autism and Special Populations, PA Department of Human Services.