10 Early Signs of Autism in Toddlers Parents Should Know
Babies into toddlerhood develop at such a rapid pace, priming parents to wonder if their child is hitting developmental milestones appropriately. Maybe you’ve noticed that they don’t look up at you quite as often as other children their age. These observations aren’t reason for panic, but it’s important to pay attention to them.
Understanding the early signs of autism spectrum disorder (ASD) empowers you to seek support sooner rather than later. The key is knowing what to look for and when to reach out for guidance.
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Why Early Detection Of Autism Matters
Children who receive autism support services early in life make more significant progress in communication, social skills, and adaptive behaviors. The brain is incredibly flexible during those first few years. That’s why starting evidence-based interventions before the age of three can be transformative.
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#1: Disconnected Eye Contact & Social Connection
One of the earliest signs parents notice involves how their child uses eye contact. Typically developing toddlers naturally look at their caregivers’ faces to communicate excitement, request help, or share feelings. By 18 months, this should happen consistently throughout the day.
Try this simple observation during playtime: roll a ball or push a toy car back and forth with your toddler. Then, on your turn, simply stop and wait. A toddler without autism will usually look at the toy briefly before looking up at your face, as if to say, “Why did you stop? Keep going!” They might even say “more” or “again” while making eye contact.
If your child becomes upset that the game stopped but continues staring at the toy without looking up at you for help, that’s worth noting.
#2: Absence Of Joint Attention
A child’s ability to focus on something with another person – often called joint attention – is a critical developmental milestone. It involves your toddler not just looking at something interesting, but checking to make sure you’re looking too.
At home, place one of your child’s favorite toys across the room, just out of reach. Then ask, “Where’s your car?” Your child should point at the toy and then look back at you to confirm you’re paying attention to what they’re showing you. That back-and-forth exchange demonstrates joint attention.
If your child looks at or walks toward the toy but doesn’t glance back to check if you’re engaged, they’re missing that crucial element of shared experience.
#3: Only Gesturing When Prompted
Long before toddlers master spoken words, they communicate through gestures. By 18 months, you should see your child using multiple gestures throughout the day to tell you what they want and how they’re feeling.
Watch for your child to spontaneously hold their arms up when they want to be picked up, wave hello or goodbye, clap their hands during songs, shake or nod their head for yes or no, and point at objects that are out of reach. If your child rarely uses these gestures independently or needs constant prompting, this could signal a developmental delay.
#4: No Clear Response To Your Gestures
Communication isn’t just about what your child expresses – it’s also about how they respond to you. Typically developing toddlers understand and react to your gestures and points from an early age.
Test this by pointing across the room at something interesting and saying, “Wow, look at that!” Your toddler should follow your point and look in that direction to see what you’re trying to show them. They should focus on the object, not just stare at your hand or arm.
#5: Inconsistent Name Recognition & Response
Another important developmental marker involves how consistently your toddler responds when you call their name. While your child is playing, call their name using a calm voice. Then wait about 7-10 seconds. If they don’t respond, try again with the same tone. After another brief pause, you can try one more time.
By the second or third attempt, your child should pause what they’re doing and look in your direction. While toddlers do get absorbed in play and might not respond immediately the first time, they should consistently respond by the second or third call.
If your child doesn’t respond to their name even after three attempts, and this happens repeatedly throughout the day, the first step is getting their hearing checked. If their hearing is fine and they’re still not consistently responding when called, this represents a potential early sign of autism.
#6: Language Development Delays
Delayed language development is one of the most common concerns that brings parents to seek autism evaluations. By 18 months, your child should have at least three words besides “mama” or “dada” that they use spontaneously. They should also understand and follow simple one-step instructions without you needing to point or gesture.
Beyond counting words, pay attention to how your child communicates. When your toddler talks to you, does it feel like a genuine conversation? Their tone should go up and down, like they’re asking questions or sharing excitement. They should pause when you speak and then respond when it’s their turn.
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#7: Not Sharing Joy & Interest
One of the most telling signs of typical social development is how your child shares their discoveries and excitement with you. When your toddler finds something fascinating (maybe a bug outside or a colorful toy), watch what they do next.
Typically, they should pick it up, walk over to you, hold it up toward your face, and look directly at you as if to say, “Look at this incredible thing I found!” They might even say “Look, Mama!” or “Look, Dada!” Unlike asking for help, they just want to share that pure moment of joy.
If your child finds something interesting but simply plays with it alone, or drops it in your lap and immediately walks away without making eye contact, they’re missing that natural desire to share their joy.
#8: Limited Pretend Play
Between 18-24 months, children begin pretending their toys are real. Suddenly, dolls become hungry and need to be fed. Teddy bears get tired and must go to bed. Little cars make “vroom vroom” sounds as they race around the living room.
Watch for feeding dolls, putting teddy bears to bed, or making car sounds during play.
If instead you notice your child plays with toys in very literal, repetitive ways – spinning car wheels over and over without pretending to drive, or moving dolls around without any storyline – this suggests they haven’t yet developed pretend play skills.
#9: Not Imitating Others
Imitation is how young children learn almost everything. By age two, your child should become your shadow, copying almost everything you do. When you brush your teeth, your toddler wants to brush theirs. When you comb your hair, they grab their brush too. When you clap during a song, they immediately join in.
Pay attention to what your child does when you’re doing something. Do they immediately want to copy you, or do they just watch without joining in? If they tend to observe without imitating, even for simple actions like clapping or waving, this represents a developmental concern.
#10: Repetitive Behaviors & Stimming
Many children with autism engage in repetitive movements or self-stimulating behaviors, often called “stimming.” These movements happen multiple times throughout the day and may include flaring fingers repeatedly, waving fingers in front of their eyes to watch how the light changes, flapping hands at their sides, rocking their body back and forth, spinning in circles, or walking on their toes most of the time.
It’s completely normal for toddlers to experiment with different movements. You might notice your child does these behaviors for a few days and then stops; this is typical exploration and nothing to worry about. However, if you notice your child continues these repetitive movements daily over weeks or months, and these behaviors become almost like their preferred form of play, this represents a potential sign of autism.
Move Forward With Confidence
If you recognize several of these signs in your toddler, please don’t panic. Seeing one or even a few of these behaviors doesn’t automatically mean your child has autism. Many children show some of these characteristics temporarily before developing typically.
The purpose of understanding these early indicators is to empower you to have informed conversations with your pediatrician.
When autism is identified before age three, early intervention gives them tools to communicate, connect, and navigate their world more successfully. Evidence-based treatments like ABA therapy, speech therapy, and occupational therapy provide the structured support children with autism need to build foundational skills.
Progress doesn’t happen overnight. It takes consistent effort, skilled professionals, and families who believe in their child’s potential – support that helps every child learn, grow, and succeed.