Many parents begin to notice differences in their child’s development long before seeking professional advice. You might feel unsure whether these differences are simply part of your child’s personality or whether they may indicate something more. Understanding the early signs of Autism in children can help families decide whether it may be helpful to seek an assessment.
What is Autism?
Autism (Autism Spectrum Disorder) is a neurodevelopmental condition that affects how a person communicates, interacts with others and experiences the world.
Autistic children may experience differences in:
- communication and language
- social interaction
- behaviour and routines
- sensory experiences
Autism is described as a spectrum, meaning that it affects each child differently.
Early Signs of Autism in Toddlers

Some early indicators parents may notice include:
- limited use of gestures such as pointing or waving
- delayed speech or language development
- limited eye contact
- little interest in playing with others
- repetitive movements or behaviours
However, every child develops differently and these behaviours do not always indicate Autism.
Signs of Autism in School-Age Children

As children grow older, differences may become more noticeable in social situations or school environments.
Parents and teachers may notice:
- difficulty making or maintaining friendships
- difficulty understanding social rules
- strong preference for routines
- intense interests in specific topics
- challenges with flexible thinking
Autism in Girls

Autism in girls can sometimes be harder to recognise.
Some girls may appear socially confident but may be working hard to mask or copy social behaviours. As a result, their difficulties may not become obvious until later childhood.
Signs in girls can include:
- copying peers to fit in socially
- strong emotional responses
- social exhaustion after school
- intense interests
For a more indepth understanding, read our blog – Women & Masking Autism: The Silent Struggle .
Sensory Differences in Autism

Many Autistic children experience sensory input differently.
This might include:
- sensitivity to loud noises
- discomfort with certain clothing textures
- distress in busy environments
- seeking strong sensory experiences such as spinning or movement
When Should Parents Seek Advice?
Lead Specialist Speech & Language Therapist – Lorna Bailey says “Parents often notice patterns in their child’s development that make them wonder whether an Autism assessment might be helpful. We understand that seeking out an assessment can feel overwhelming and stressful – the below checklist can help you reflect on some common signs. We also offer free 20 minute advice sessions throughout the year for parents who have concerns and would like to chat to our team of specialised therapists.”
Signs of Autism in Children Checklist
Communication
Your child may:
🔲 struggle to start or maintain conversations
🔲 repeat phrases or scripts
🔲 find it difficult to explain thoughts or feelings
Social Interaction
Your child may:
🔲 prefer to play alone
🔲 struggle to understand social cues
🔲 find it difficult to make friends
Behaviour and Routines
Your child may:
🔲 strongly prefer predictable routines
🔲 become distressed by changes
🔲 have intense interests
Sensory Differences
Your child may:
🔲 be sensitive to sounds or textures
🔲 avoid busy environments
🔲 seek movement or deep pressure
If several of these signs feel familiar, it may be helpful to seek professional advice – speaking with a specialist can help you decide on the next steps.
Seeking advice does not automatically mean your child is autistic. However, assessment can help identify the most appropriate support.
Some children who are referred for autism assessment may instead have other communication needs, such as Developmental Language Disorder (DLD). You can learn more about this in our blog – DLD, Autism or ADHD?
Why a Diagnosis Can Be Helpful
For many families, a diagnosis provides clarity and understanding.
An autism diagnosis can help:
- explain differences in communication or behaviour
- support schools to make appropriate adjustments
- guide strategies to support your child at home
- provide access to additional services or support
Most importantly, it helps ensure that your child receives support tailored to their individual needs.
Our Approach to Autism Assessment
At Independent Speech & Language Therapy Services (ISLTS), we understand that every child is unique.
Our autism assessments are:
- child-centred and supportive
- based on recognised diagnostic frameworks
- informed by parents, carers, and educational settings
- focused on understanding both strengths and areas of difficulty
Our aim is always to provide clear information, practical guidance, and supportive recommendations for families and schools.
Get the Right Support
Our experienced therapists provide Autism diagnostic assessments for children and young people across Norfolk, Norwich and East Anglia.
Learn more about our Autism assessment diagnosis assessment and how our therapists support families through the diagnostic process. Find our more about our specialist Autism assessment team and visit our blog section for lots of useful information and parent stories.
Further Reading
For more information about the signs of Autism in Children, you may find helpful guidance from