Early Signs of Autism: What to Watch For and What to Do Next

Every child develops at their own pace, which can make it hard to know when a difference in development

Every child develops at their own pace, which can make it hard to know when a difference in development is simply a matter of timing and when it might point to something more. For parents who suspect their child could be on the autism spectrum, the uncertainty itself can be one of the hardest parts. Understanding common early signs, and knowing what steps to take next, can help turn that uncertainty into action.

Why Early Recognition Matters

Research consistently shows that early intervention leads to better long-term outcomes for children with autism. A child’s brain is developing rapidly in the first few years of life, which makes this period especially responsive to intervention. Skills like communication, social engagement, and adaptive behavior are often easier to build early, before certain patterns become deeply established.
This does not mean that older children cannot make significant progress. They absolutely can. But recognizing signs early and beginning support sooner rather than later gives children the best possible foundation to build on.

Common Early Signs by Age

By 12 Months

At this age, most children respond to their name, babble with changing tones, and use simple gestures like waving or pointing. Some early signs that may warrant a closer look include limited eye contact, not responding consistently to their name, and a lack of interest in back-and-forth interactions like peekaboo.

By 18 Months

Many toddlers begin using single words and pointing to show interest in objects around them. Signs that may indicate a need for evaluation include a loss of previously acquired words or skills, limited pointing or showing of objects, and a strong preference for playing alone rather than engaging with caregivers.

By 24 Months

Around this age, children typically combine two words together and show growing interest in playing alongside or with other children. Possible signs of autism at this stage include repetitive behaviors such as lining up toys or spinning objects, intense reactions to changes in routine, and limited use of words to communicate needs.

By 36 Months

By age three, many children are forming short sentences and engaging in simple pretend play. Signs to watch for include difficulty with imaginative play, challenges understanding or following simple instructions, and persistent difficulty connecting with peers during group settings like daycare or playgroups.
It is worth noting that every child is different, and the presence of one or two of these signs does not necessarily mean a child is autistic. However, a cluster of these signs, especially when they persist over time, is worth discussing with a pediatrician.

What to Do If You Notice These Signs

Talk to Your Pediatrician

Your child’s pediatrician is often the first and most accessible resource. Share specific observations rather than general concerns. Instead of saying your child seems behind, describe exactly what you have noticed, such as not responding to their name by 15 months or not using any words by 18 months. Specific examples help your pediatrician determine whether a referral for further evaluation is appropriate.

Request a Developmental Screening

Many pediatricians use standardized screening tools at well-child visits, but you can request one at any time if you have concerns. If a screening suggests a possible developmental delay, your pediatrician will typically refer your child for a more comprehensive evaluation with a specialist.

Pursue a Formal Evaluation

A formal autism evaluation is usually conducted by a developmental pediatrician, child psychologist, or a team of specialists. This process involves observing your child’s behavior, communication, and social interaction, along with gathering detailed information from parents about developmental history. While waiting for an evaluation
can feel like a long process, many regions offer early intervention services that can begin even before a formal diagnosis is complete.

Explore Early Intervention Services

In many states, children under three who show developmental delays can access early intervention services regardless of whether they have a formal autism diagnosis yet.
These programs often include speech therapy, occupational therapy, and behavioral support, and they can be a valuable starting point while a full evaluation is underway.

What Happens After a Diagnosis

Receiving an autism diagnosis can bring a mix of emotions, from relief at finally having answers to worry about what comes next. It helps to remember that a diagnosis is not a limitation. It is information that opens the door to targeted, effective support.
Applied Behavior Analysis therapy is one of the most well-researched and widely recommended interventions following an autism diagnosis. A Board-Certified Behavior Analyst will conduct a thorough assessment of your child’s specific strengths and needs, then build an individualized plan that targets communication, social skills,
independence, and behaviors that may be getting in the way of learning and connection.

You Are Not Alone in This

Parenting a child with autism, or even parenting through the uncertainty of wondering whether your child might be autistic, can feel isolating. It is not something you have to navigate by yourself. Pediatricians, early intervention coordinators, therapists, and support communities exist precisely because so many families walk this path.
At Super Kids, we understand how overwhelming those early questions can feel. Our team works alongside families from the moment concerns first surface, helping guide the path toward evaluation, diagnosis, and individualized therapy. Whether you are just beginning to notice signs or already hold a diagnosis in hand, taking that next step, whatever it may be, is worth taking. Early action, paired with the right support, can make a meaningful difference in your child’s development and in your family’s journey together.