Early Signs of Autism in Toddlers: When to Seek Support in Chicago

Every parent knows that feeling — a quiet worry that something might be different about your child. Maybe your toddler isn't making eye contact the way you'd expect. Maybe they've stopped saying the words they used to say, or they seem unusually distressed by sounds or changes in routine. Maybe their pediatrician mentioned something at the last well-child visit, and now you can't stop thinking about it.

If any of this sounds familiar, you're not alone — and you're asking exactly the right questions.

The early signs of autism in toddlers can be subtle, and they look different from child to child. What matters most is that if something feels off, you don't have to wait and wonder. At North Shore Pediatric Therapy, we work with families across the Chicago area every day who are right where you are — searching for clarity, looking for support, and hoping to get their child the right help as early as possible.

Why Early Identification Matters

Research consistently shows that early intervention leads to significantly better outcomes for autistic children. The earlier a child receives support, the more the brain can respond to targeted therapies like ABA therapy, speech therapy, and occupational therapy. That's not a reason to panic — it's a reason to act.

Autism can often be reliably identified as early as 18 months. Waiting until age 3 or 4 to pursue an evaluation — or being told by a well-meaning provider to "wait and see" — means missing a critical window of development. If your instincts are telling you something is different, that instinct is worth following.

Early Signs of Autism in Toddlers (12–36 Months)

No checklist can replace a professional evaluation, but there are common early signs that parents and pediatricians watch for in toddlers. Keep in mind that every child develops at their own pace, and the presence of one or two signs doesn't necessarily indicate autism. What matters is the overall pattern — and whether it's getting in the way of your child's connection with the world around them.

Social communication and interaction signs include not making eye contact or making very limited eye contact, not responding when their name is called, not smiling back when you smile at them, not pointing to show you things they find interesting, not following your gaze or finger when you point at something, and preferring to play alone rather than alongside or with others.

Language and communication signs include not babbling as if having a back-and-forth conversation, not saying single words by 16 months, not using two-word phrases by 24 months, losing words or language skills they previously had, and repeating specific phrases, songs, or words out of context (known as echolalia).

Behavioral and sensory signs include repetitive movements like hand-flapping, rocking, or spinning, becoming very distressed by changes in routine or transitions, intense sensitivity to sounds, textures, smells, clothing, or being touched, lining up objects or playing with toys in the same rigid way every time, and limited or unusual play, such as focusing on parts of toys rather than the whole toy.

If you counted five or more of these signs, or if any of them are significantly affecting your child's daily life, it's worth having a conversation with a specialist. You don't need a referral to reach out to our team.

"Should I Wait and See?" — Why Earlier is Almost Always Better

One of the most common things parents tell us is that they wish they had called sooner. The "wait and see" approach feels safe, but for toddlers showing early signs of autism, it often means delaying access to supports that can make a real difference.

Here's what we know: the brain is most adaptable in the earliest years of life. Children who begin receiving targeted support — through ABA therapy, speech and language therapy, or occupational therapy — before age 3 or 4 tend to make greater gains in communication, social connection, and daily living skills. An evaluation doesn't commit you to anything. It gives you information. And information lets you make the best possible decisions for your child.

What About Early Intervention (EI)?

If your child is under 3, you may already be connected with Illinois's Early Intervention program, which provides free developmental support services for young children with delays. EI is a valuable resource, but there's an important distinction parents often don't realize: Early Intervention does not provide a formal autism diagnosis.

A clinical autism diagnosis — made by a licensed neuropsychologist or developmental pediatrician — is separate from EI services and is what most insurance companies and schools require to access ABA therapy, school accommodations, and other critical supports. If your child is currently in EI and you have questions about autism, a formal evaluation is still a worthwhile and important next step.

NSPT's Early Autism Testing Clinic: Fast Answers for Chicago-Area Families

One of the biggest frustrations parents face when seeking autism testing in the Chicago area is the wait. Many providers have backlogs of six months to over a year for evaluations. At North Shore Pediatric Therapy, we built our Early Autism Testing Clinic specifically to change that.

Our Early Autism Testing Clinic is designed for children 18 months to 4 years old, and appointments are typically available within 2 to 3 weeks. Evaluations are led by licensed neuropsychologists — doctoral-level clinicians with specialized training in child development and diagnostics. Our team uses the ADOS-2 (Autism Diagnostic Observation Schedule), the gold-standard assessment for diagnosing or ruling out autism. The evaluation is play-based and takes approximately 3 hours, and in most cases, families receive initial feedback from the neuropsychologist on the same day. A detailed written report follows within 3 to 4 weeks, which you can share with your child's school, pediatrician, or therapy team.

Why does it matter that a neuropsychologist leads the evaluation? Because a neuropsychologist doesn't just look for autism — they're trained to evaluate the full picture, including ADHD, language delays, anxiety, learning differences, and other developmental concerns that can look similar to autism or co-occur with it. You leave with real answers, not just a label.

Our Early Autism Testing Clinic locations across the Chicago area include Arlington Heights, Deerfield, Evanston, and Naperville. For older children and broader neuropsychological evaluations, we also have a dedicated Neuropsychology Testing Center in Des Plaines.

What Happens After a Diagnosis?

A diagnosis is not a ceiling for your child — it's a map. It tells your child's care team how they learn, what they need more of, and where targeted support can open new doors.

At NSPT, because our testing clinic operates within the same organization as our therapy centers, the path from evaluation to support is seamless. Your family won't need to start over with a new provider or navigate a referral maze. From the day you receive your child's diagnosis, our team can connect you directly with the therapies that fit their profile, including ABA therapy, speech and feeding therapy, occupational therapy, physical therapy, and mental health services.

For children approaching preschool age, our Blossom Prep School is also worth exploring — it's a therapeutic half-day school readiness program designed for children 2 to 6 that blends individualized therapy goals with structured classroom experiences, helping children build the communication, social, and routine skills they'll need for kindergarten.

Where to Find NSPT Across Chicagoland

We serve families across the Chicago area from 12 locations. Wherever you are in the region, there's likely an NSPT center close to you. Our full-service therapy centers — offering ABA therapy, occupational therapy, speech therapy, physical therapy, and mental health services — are located in Lincolnwood, Arlington Heights, Chicago (Bucktown), Deerfield, Des Plaines, Elmhurst, Evanston, Glenview, Lake Bluff, Naperville, Vernon Hills, and Woodridge. You can view all locations and services here.

We accept most major insurance plans, including Blue Cross Blue Shield, UnitedHealthcare, Optum, Tricare, Multiplan, NorthShore, and Amita Health. Our team will complete a complimentary benefits check on your behalf so you know what to expect before your child's first appointment. Learn more about what to expect with insurance and therapy costs.

You Don't Have to Wait to Get Answers

If something in this post resonated with you, that feeling matters. You know your child better than anyone. Whether you're almost certain something is different or you're just not sure, an evaluation gives you clarity — and clarity gives you options.

Our Early Autism Testing Clinic typically has availability within 2 to 3 weeks for children under 4. There's no endless waitlist, no referral maze, and no pressure. Just a team that will listen and help you figure out the best next step for your child.

Schedule an early autism evaluation at NSPT →