Understanding the signs and symptoms of Autism Spectrum Disorder (ASD) is an essential step for parents, caregivers, and educators. Many families start with questions like, “Is this typical behaviour?” or “Should I be concerned?” This blog will walk through the common signs of autism in children, what those symptoms might look like in everyday situations, and how early identification can support better outcomes. We’ll also discuss what behaviours to watch for, how autism may appear differently in toddlers, and what the next steps look like when considering an autism diagnosis in children.
What Are the Early Signs of Autism?
Early signs of autism can appear before the age of 2, however the timing and presentation of symptoms can vary significantly. These signs often relate to how a child interacts socially, communicates, and responds to their environment. While every child is different, there are some consistent markers that professionals look for when assessing autism spectrum disorder symptoms.
Some early signs of autism may include:
- Limited eye contact or avoiding eye contact altogether
- Delayed or absent speech development
- Repetitive movements like hand-flapping or rocking
- Resistance to changes in routine
- Unusual reactions to sensory input (e.g. loud sounds, textures)
In some cases, children may reach early developmental milestones and then regress — losing language or social skills they previously had. It’s important to remember that these signs may not mean your child has autism, but they are worth discussing with a psychologist or pediatrician. However, it’s also important to note that although these may be indicative of Autism, not all children who exhibit these difficulties meet the full criteria for Autism Spectrum Disorder.
Learn more about our Austism Spectrum Assesment service
Recognizing Autism Traits in Toddlers
Autism traits in toddlers can be subtle, especially if you’re seeing them in isolation. Often, caregivers notice something feels “different” before they can articulate what it is. In toddlers, these traits can include both behavioural and emotional patterns that stand out from typical development.
Common autism traits in toddlers:
- Lack of pretend play (e.g. not imitating others or engaging in make-believe)
- Limited gestures like pointing or waving
- Preferring to play alone, even in group settings
- Difficulty understanding or responding to emotions
- Echoing phrases or repeating parts of TV shows
The toddler years are an ideal time for early identification. With the brain developing rapidly, early interventions can have a meaningful impact on social, cognitive, and emotional growth.
Autism Behaviours to Watch For
When looking for autism behaviours to watch for, think about how a child responds to people, sensory input, and change. These behaviours may vary significantly between individuals and aren’t always consistent throughout the day.
Key behaviours to watch for include:
- Repeating the same actions or routines over and over
- Obsessive interest in particular objects or topics (e.g. wheels, letters)
- Difficulty engaging in back-and-forth conversation
- Unusual tone or rhythm in speech (monotone, singsong)
- Overreacting or underreacting to pain, noise, or lights
These behaviours often go beyond typical childhood quirks. If you notice a pattern that feels concerning, it may be time to learn more about Autism Spectrum Disorder symptoms and get professional input to help determine whether they meet the criteria for Autism.
Understanding the Process: Autism Diagnosis in Children
Receiving an autism diagnosis in children can be a relief, a challenge, or a bit of both. Diagnosis usually involves a multi-step process including observation, questionnaires, developmental history, and standardized assessments. In Canada, this is often done by a psychologist or a developmental pediatrician.
Here’s what the process might involve:
- Interviews with caregivers about developmental milestones
- Observations of behaviour in-clinic
- Behavioural assessments like the ADOS-2 or CARS-2
- A detailed report with diagnostic findings and recommendations
The goal of diagnosis isn’t just to label — it’s to understand your child’s strengths and needs better. With an accurate diagnosis, families can access autism-related supports, funding, and educational services earlier.
Did You Know?
- According to the Public Health Agency of Canada, 1 in 50 Canadian children aged 1 to 17 has been diagnosed with Autism Spectrum Disorder.
- Early intervention is linked to improved long-term outcomes in areas like communication, behaviour, and academic performance.
Conclusion: What Are the Signs and Symptoms of Autism Spectrum Disorder?
The signs and symptoms of Autism Spectrum Disorder can include social challenges, communication difficulties, repetitive behaviours, and unique sensory responses. By learning to recognize the early signs of autism and watching for key autism traits in toddlers, parents and caregivers can take informed steps toward support. If you think your child might be showing signs, a formal autism diagnosis in children can open the door to resources and understanding. At Waystone Psychology, we’re here to walk beside you on that journey.
How Waystone Psychology Can Help Your Family
If you’re noticing changes or challenges in your child’s development, you’re not alone. At Waystone Psychology, we specialize in early identification, assessment, and ongoing support for families navigating autism. Whether you’ve just begun noticing behaviours or you’re actively seeking a diagnosis, our team provides compassionate, evidence-based care every step of the way.
Reach out today to learn more about our autism services and how we can support your child’s unique developmental journey.