Can a Paediatrician Diagnose Autism?
Learn how paediatricians assess autism, the symptoms worth noting, and what support is needed after a diagnosis.
Written by: Dr Vivek Akkera, Paediatrician, MBBS, MD, FRACP
Published: 5 January 2026
Summary
- Autism is a developmental condition that affects communication, social interaction, behaviour, and sensory processing.
- Autism is influenced by genetic and biological factors that affect brain development and is not caused by parenting, vaccines, or anything a parent did or didn’t do.
- Common signs of autism may include differences in communication, social interaction, behaviour, and sensory responses.
- Paediatricians can assess and diagnose autism by evaluating a child’s development, behaviour, communication, and social functioning.
- It’s worth seeing a paediatrician if you have concerns about your child’s development, communication, social skills, or sensory sensitivities.
- Autism support focuses on helping children build skills, communicate effectively, and thrive in ways that suit their individual strengths and needs.
DISCLAIMER: This article is for general information only and does not replace professional medical advice, diagnosis, or treatment. If you have concerns about your child’s development, behaviour, or learning, speak with a paediatrician or a qualified healthcare professional.
What Is Autism?
Autism spectrum disorder (ASD) is a developmental condition that affects how a child communicates, behaves, and interacts with others. It’s called a spectrum because autism looks different in every child.
Some children may speak very little, while others talk fluently but struggle with back-and-forth conversation. Some may avoid eye contact, while others make eye contact but find it difficult to read social cues. Many children with autism have sensory sensitivities, strong interests in specific topics, or prefer routines and predictability.
Autism is not a disease or something that can be caught. It’s a different way of experiencing and navigating the world.
What Causes Autism?
Autism does not have a single cause. Research shows that a combination of genetic and biological factors influences brain development before and after birth.
Some children are more likely to be autistic if they have a sibling with autism or if there are certain genetic variations in the family. However, most cases of autism occur without a clear family history.
It’s important to know that autism is not caused by parenting style, vaccines, or anything a parent did or didn’t do during pregnancy. These myths have been thoroughly disproven by decades of research, but they still cause unnecessary worry for many families.
What matters most is recognising the signs early and seeking guidance from a professional who can help your family understand your child’s unique needs.
Common Autism Symptoms
Signs of autism often become noticeable in the first few years of life, though some children may not show clear differences until they’re older. Every child develops at their own pace, so noticing one or two differences doesn’t mean your child is autistic. However, certain patterns may prompt parents to seek a paediatrician’s guidance.
Communication and Language Differences
- Delayed speech or language development
- Repeating phrases without clear meaning (echolalia)
- Difficulty understanding gestures, facial expressions, or tone of voice
- Not responding when their name is called
- Struggling to express wants or needs
Social Interaction Differences
- Preferring to play alone rather than with other children
- Showing limited interest in peers or social games
- Difficulty understanding emotions or reading social cues
- Not pointing to share interests or bring toys to show caregivers
- Limited eye contact or unusual patterns of eye contact
Behavioural Patterns and Sensory Sensitivities
- Repetitive movements like hand-flapping, spinning, or rocking
- Intense focus on specific objects, topics, or parts of toys
- Distress when routines or environments change
- Sensitivity to sounds, textures, lights, or smells that don't seem to bother others
- Arranging toys or objects in specific patterns
Note: Noticing these signs is not the same as a diagnosis. They’re simply clues that a conversation with a paediatrician might be helpful.
Can a Paediatrician Diagnose Autism?
Yes, a paediatrician can diagnose autism. In Australia, paediatricians are trained to assess developmental concerns and can formally diagnose autism spectrum disorder in many cases.
The process usually starts with a developmental screening. Your paediatrician will ask detailed questions about your child’s communication, behaviour, social interactions, and daily routines. They’ll also observe your child during the appointment, looking for patterns that align with autism.
Your paediatrician may also order medical tests to rule out other similar conditions that can affect development, such as hearing problems or genetic conditions. These tests don’t diagnose autism directly, but they help build a complete picture of your child’s health.
The diagnosis process can feel overwhelming, but paediatricians understand what families are going through. Their role is to provide clarity, answer your questions, and help you move forward with confidence.
When Should You See a Paediatrician About Autism?
Trust your instinct as a parent. If you feel something is different about your child’s development, it’s worth having a conversation with a paediatrician, even if you’re not sure what the concern is.
Common reasons families seek a paediatrician’s advice include:
- Delayed speech or language development
- Limited eye contact or unusual eye contact patterns
- Difficulty engaging with other children or peers
- Strong reactions to sensory experiences (sounds, textures, lights)
- Rigid routines or distress when routines change
- Your child's GP has raised concerns or suggested a referral
Important: You don’t need to wait until your child shows multiple signs before making an appointment. Paediatricians would rather see a child early and provide reassurance than miss an opportunity for early support.
Autism Treatment and Support
Autism is not something that needs to be cured or fixed. It’s a lifelong condition, and the goal of support is to help your child develop skills, communicate effectively, and feel comfortable in their daily life.
Support often includes speech therapy to help with communication, occupational therapy to build daily living skills and manage sensory sensitivities, and behavioural or developmental therapy to support learning and social interaction. Every child’s support plan looks different because every child’s strengths and challenges are different.
Families are central to the process. Therapists work with parents to teach strategies that can be used at home, making support part of everyday life rather than something that only happens during appointments.
Autism support is not about changing who your child is. It’s about giving them the tools they need to navigate the world in a way that works for them, while celebrating the things that make them unique.
Paediatrician, MBBS, MD, FRACP
Dr Vivek Akkera is a Consultant General Paediatrician and Fellow of the Royal Australasian College of Physicians (FRACP), with over 16 years of clinical experience in paediatric care across India, the United Kingdom, and Australia. He has worked extensively within the Sydney Children’s Hospital Network and The Children’s Hospital at Westmead, managing a broad range of general paediatric, neonatal, and developmental presentations. Dr Akkera has a particular clinical interest in neonatology, developmental and behavioural paediatrics, and autism assessment, and holds specialised training in ADOS-2. His practice focuses on evidence-based care tailored to the individual needs of children and families.