Early Signs of Autism in Babies: How to Spot Symptoms, Get a Diagnosis, and Access Support in the UK

Top view kid playing with colorful game

Understanding autism in babies can be reassuring and empowering for parents and carers. While autism is usually diagnosed around the age of 4 or 5, some early signs can appear during the first year of life. In this post, we’ll walk you through what to look out for, how to get an autism diagnosis for your child in the UK, and what support you may be entitled to.

What Is Autism in Babies?

Autism, or autism spectrum disorder (ASD), is a developmental condition that affects how a child communicates, interacts, and processes the world around them. It's called a "spectrum" because the signs and impact can vary widely from child to child. While babies with autism may not look different physically, their behaviour and development can be noticeably different.

Early Signs of Autism in Babies

Most parents begin to notice early signs of autism in babies by the age of 2, but some signs can appear as early as 2–6 months. It’s usually not about strange behaviours—it’s more about what your child isn’t doing compared to other babies their age.

Common Autism Signs in Babies (0–12 months)

  • Limited eye contact after about 2 months old
  • Not responding to their name by 6 to 9 months
  • Little or no pointing, waving, or other gestures by 12 months
  • Lack of interest in faces or voices
  • Not following where you point (known as joint attention)
  • Reduced emotional expression through facial cues
  • Unusual reactions to sound—either hypersensitive or unresponsive
  • Not reaching out to be picked up or comforted

Autism Signs in Toddlers (12–24 months)

  • Delayed speech or lack of babbling
  • Repetitive actions like hand flapping or rocking
  • Strong preference for routines or resistance to change
  • Limited pretend play
  • Difficulty understanding or showing emotions

What To Do If You Suspect Autism

If you’ve noticed a few of these early signs of autism in babies, don’t panic—but do act. Early intervention makes a big difference.

1. Speak to Your GP or Health Visitor

They can help rule out other causes and refer you for a child autism assessment.

2. Keep a Record

Note down specific behaviours, when they happen, and any concerns. Videos can also be useful during an assessment.

3. Ask About Developmental Screenings

In the UK, developmental checks happen at 9 and 24 months. You can also request an autism test for a child at any time if you’re concerned.

For detailed guidance, visit our Private GP Services.

Getting an Autism Diagnosis for Your Child in the UK

A formal autism diagnosis for a child is usually carried out by a paediatrician, child psychologist, or specialist autism team. It may involve:

  • Observing your child’s behaviour
  • Interviews with you (the parents or carers)
  • Developmental questionnaires

Some NHS waiting lists can be long, but private autism assessments at our clinic offer faster access to assessment.

Benefits of an Autism Diagnosis for a Child

Getting a diagnosis can feel overwhelming, but it opens doors to support.

Support Services

A diagnosis helps you access:

  • Speech and language therapy
  • Behavioural support
  • Special educational needs support (SEN)

Government Benefits for a Child with Autism

Depending on your situation, your child may be eligible for:

These are some of the answers to what a child with autism is entitled to in the UK. For additional help, explore our mental health services.

FAQs About Autism in Babies

At what age do the signs of autism usually appear?

Some signs of autism can appear as early as 2 months, but they’re usually more noticeable between 12–24 months.

How can I tell the difference between normal delays and autism?

It’s all about patterns. A single delay isn’t usually a concern, but several delays or regressions could be. Always speak to a GP if unsure.

Is there a test for autism in babies?

There is no blood test or scan—autism tests for children are based on observed behaviour, milestones, and interaction.

What happens after an autism diagnosis?

You’ll have access to professional support and local authority services, and you may be entitled to government benefits for a child with autism.

Final Thoughts

Spotting the early signs of autism in babies can be tough, but trust your instincts. If something doesn’t feel right, speak up. An early autism diagnosis for your child means you can access the right support sooner, and that can make all the difference.

At Private Medical Clinic, we offer private assessments, personalised guidance, and friendly support to help your child thrive.

Need help? Contact us to book a private autism assessment today.

Latest blog posts

Front view woman dealing with genital warts
Sexual Health

Genital Warts Explained: Symptoms, Causes and Treatment Options

Genital warts are one of the most common types of sexually transmitted infections (STIs), but they can still feel a bit awkward to talk about. That’s why we’re here to explain exactly what they are, how they spread.
Top view women reproductive system and pills
Sexual Health

Chlamydia Treatment Guide: Symptoms, Testing and Antibiotics

Chlamydia is one of the most common sexually transmitted infections (STIs) in the UK. A type of bacteria causes it and often spreads through unprotected vaginal, anal, or oral sex.
young woman coughing with fist
Health

Asthma Guidelines UK: BTS, NICE & SIGN Unite on Diagnosis and Management Standards

Asthma affects over 5 million people across the UK. Whether you're living with asthma, treating patients, or simply want to stay updated.
Man Using Inhaler for Respiratory Health
Health

Adult Asthma Explained: Symptoms, Silent Attacks, Causes, Testing, and Late-Onset Diagnosis

Asthma isn’t just a childhood condition. Adult asthma is more common than most people realise. It can develop out of the blue and, if not managed properly, can be life-threatening.
Mother treats her daughter at home
Health

Childhood Asthma Symptoms: How to Test, Diagnose and Spot Flare-Up Signs in Kids

As a parent, spotting the early signs of asthma in your little one can feel daunting. In this post, we’ll guide you through the most common childhood asthma symptoms and outline how to diagnose asthma in a child.
Zoom in shot of angry young wife at autism assessment
Mental Health

Recognising the Signs of Autism in Adults: Symptoms, Diagnosis, and How to Get Tested

Autism isn’t just something that affects children. Many adults are only beginning to understand that the challenges they've faced for years could be linked to undiagnosed autism.