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What early signs of autism should parents look for? 

Posted
Updated
ByMy Patient Advice
Author: Hannah Smith, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Recognising the early signs of autism in infants can lead to quicker support, better outcomes, and greater peace of mind for families. While every child develops at their own pace, certain behavioural patterns may signal the need for closer observation. 

One of the earliest early signs of autism in infants is limited eye contact or facial engagement. Babies may also show little interest in social games such as peekaboo, or they may not respond to their name. These subtle red flags are sometimes missed but can be critical in shaping early interventions. 

Monitoring developmental milestones such as babbling, crawling, and pointing helps create a clearer picture of a child’s progress. A delay in these, particularly when paired with behaviours such as repetitive movements or resistance to touch, could indicate the early signs of autism in infants. Acting on these signs does not mean rushing into a diagnosis; it means preparing to put support in place if needed. 

Start your private Autism assessment

Specific Behaviours That May Indicate Concern 

Here are some examples of early differences that could benefit from professional assessment: 

Lack of Shared Attention 

Infants may not follow where others are pointing or showing interest. This can signal social-communication differences. 

Unusual Sensory Reactions 

Overreacting to textures, sounds, or lights may appear early. These reactions often relate to sensory processing differences. 

Repetitive Body Movements 

Rocking, flapping, or hand-fixation could emerge. While not exclusive to autism, they may suggest a need for monitoring. 

Visit providers like Autism Detect for personal consultations to understand how maternal health and sensory processing impact your child’s development and how to support effective sensory regulation and comfort. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Maternal Health and Infections.

Hannah Smith, MSc
Author

Hannah Smith is a clinical psychologist with a Master’s in Clinical Psychology and over three years of experience in behaviour therapy, special education, and inclusive practices. She specialises in Applied Behavior Analysis (ABA), Cognitive Behavioural Therapy (CBT), and inclusive education strategies. Hannah has worked extensively with children and adults with Autism Spectrum Disorder (ASD), ADHD, Down syndrome, and intellectual disabilities, delivering evidence-based interventions to support development, mental health, and well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

Dr. Rebecca Fernandez, MBBS
Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy. 

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