Every child develops at their own pace—but sometimes, certain differences in development may signal the need for a closer look. Early identification of autism can make a meaningful difference, allowing children to access support during the most critical years of growth.

At Thrive ABA Therapy, we believe in empowering families with knowledge so they can take confident next steps. Here are some common early signs of autism in toddlers to be aware of.

1. Delayed Speech or Limited Communication

One of the most noticeable early signs is delayed language development. A toddler may not be using words by 12–18 months, may lose words they previously used, or may rely more on gestures than speech. Some children may also repeat words or phrases (called echolalia) instead of using language functionally.

2. Limited Eye Contact and Social Engagement

Toddlers typically seek connection—smiling, making eye contact, and sharing attention with caregivers. A child showing signs of autism may avoid eye contact, seem less interested in people, or not respond consistently to their name.

3. Reduced Interest in Play and Imitation

Imitation is a key part of early learning. If a toddler is not copying actions like clapping, waving, or pretend play (feeding a doll, talking on a toy phone), it may be a sign of delayed social development.

4. Repetitive Behaviors

Repetitive movements such as hand flapping, rocking, spinning objects, or lining up toys can be indicators. While some repetition is typical in toddlers, frequent or intense patterns may warrant further evaluation.

5. Strong Preference for Routines

Many children like routines, but toddlers with autism may become very upset with small changes. They may insist on doing things in a specific way or struggle with transitions between activities..

6. Sensory Sensitivities

Some toddlers may be overly sensitive—or under-responsive—to sounds, textures, lights, or touch. This might look like covering ears, avoiding certain foods or clothing, or seeking out intense sensory experiences.

7. Limited Gestures and Joint Attention

By around 12 months, toddlers typically point to show interest or share experiences. A child with autism may not point, show objects, or look back and forth between a caregiver and an item of interest.

What to Do if You Have Concerns

If you notice some of these signs, trust your instincts. Early screening and evaluation can provide clarity and open the door to helpful support. You can start by speaking with your pediatrician or reaching out to a qualified professional.

At Thrive ABA Therapy, we specialize in working with young children diagnosed with autism in the comfort of their homes, using positive, relationship-based approaches. Our Board Certified Behavior Analysts (BCBAs) provide individualized care designed to build communication, social, and daily living skills in ways that feel natural and meaningful.

Early support can make a big difference—and you don’t have to navigate it alone.

If you have questions or would like to learn more about our services, we’re here to help.