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NeuroSpectrum Info

Signs of Autism in a 6-Month-Old: What to Watch For*


Babies with autism may show unusual reactions to sensory stimuli.
Babies with autism may show unusual reactions to sensory stimuli.

Early identification of Autism Spectrum Disorder (ASD) can make a profound difference in a child’s life. While a definitive diagnosis isn’t made until later, subtle signs in infants as young as six months could indicate the need for further observation. Understanding these early indicators can help parents and caregivers provide timely support.


Delayed or Atypical Social Engagement


By six months, most infants:

  • Smile socially in response to others.

  • Maintain eye contact during interactions.

  • Show excitement or interest when someone talks or plays with them.


If your baby doesn’t smile back, avoids eye contact, or seems uninterested in engaging with people, these could be early signs of autism.


Limited Response to Their Name


At this age, many babies start recognizing and responding to their names. If your infant doesn’t turn their head or show acknowledgment when their name is called, it’s worth mentioning to your pediatrician.


Unusual Motor Movements


Some infants with autism may exhibit repetitive movements, such as:

  • Flapping their hands.

  • Rocking back and forth.

  • Stiffening their arms or legs frequently.


These behaviors may be soothing for the baby, but they could also signal sensory processing differences.


Reduced Babbling & Vocalization


By six months, babies often experiment with sounds, cooing and babbling to communicate. If your child seems unusually quiet or doesn’t vocalize much, this could be an area to monitor.


Limited Interest in Faces or Objects


Babies typically love to explore faces, toys, and their surroundings. It may indicate developmental differences if your infant seems disinterested in toys or doesn’t track moving objects.


When to Seek Guidance


If you notice these signs consistently, don’t panic. Every baby develops at their own pace. However, sharing your concerns with your pediatrician is essential. Early intervention, if needed, can help your baby thrive. Remember, being proactive is an act of love and care.


Caring for a child with autism can feel overwhelming for parents. Save time and make the journey easier by downloading the One Autism Health app for FREE.


*results may vary, please consult a professional.

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