Autism spectrum - early signs to watch for in young children

Last reviewed: July 2026 | Sources: NHS, National Autistic Society

Autism is a neurological difference present from birth. The earlier it's recognised, the sooner a child and their family can access support. Around 1 in 100 people in the UK are autistic.

Communication differences

Not responding to their name. Starting to speak later. Less eye contact. Repeating words or phrases. Speaking in a flat tone. Talking at people rather than with them. Intense focus on specific interests.

Behaviour and play differences

May not take part in pretend play. Difficulty joining in with other children. Repetitive actions like lining things up. Distress from changes in routine. Stimming (rocking, hand-flapping) - these are self-regulating behaviours, not something to suppress.

Sensory differences

Strong reactions to lights, sounds, smells, tastes, or textures - or barely reacting at all. Only eating certain foods. Refusing certain clothing. Environments that are mildly annoying to others may be genuinely overwhelming.

Girls are often missed

Autistic girls are more likely to mask - copying how other children behave, appearing to cope socially. They're often identified later, and may present with anxiety or eating difficulties before autism is considered.

What to do

Speak to your GP for a referral. NHS waiting lists are often long but referral opens access to support. While waiting: understand your child's sensory needs, keep routines predictable, use clear concrete language.

Speak to your GP if:

You notice several of these signs together. Trust your instinct - you know your child best. The National Autistic Society (autism.org.uk) has detailed guidance on preparing for an assessment.

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Sources

NHS - Signs of autism in children ยท National Autistic Society