Autism Spectrum Disorder (ASD) is a developmental condition that affects how individuals communicate, behave, and interact with others. Early detection of autism can significantly improve outcomes by allowing for early intervention, which can support developmental progress and improve quality of life. For parents, recognizing early signs of autism in infants can be challenging, as many symptoms might overlap with typical developmental variations. However, certain behavioral patterns can provide early indications that your child might benefit from an evaluation.

Here’s what parents should know about autism and some early signs to observe in infants.

Limited Eye Contact

One of the earliest indicators of autism in infants is limited or absent eye contact. From a young age, babies typically begin to recognize and respond to their caregiver’s faces. Around 2 to 3 months, most infants will look into their caregiver’s eyes and show interest in their expressions. A child who consistently avoids eye contact or seems to prefer looking at inanimate objects may be exhibiting an early sign of ASD.

What to Look For:

• Difficulty maintaining eye contact during interactions.
• A tendency to look at people indirectly, such as through peripheral vision.
• Preferring to look at objects or surfaces rather than faces.

Lack of Social Smiling

By about 6 months, most babies will start smiling back when someone smiles at them. This “social smile” is a response to interactions with others and a critical part of social development. If your baby rarely smiles in response to your smile or fails to show other expressions of joy, it may be worth observing this behavior further.

What to Look For:

• Limited smiling when engaged with others.
• Few expressions of joy, even during activities that typically amuse babies.
• A neutral facial expression during interactions with caregivers or other people.

Delayed or Atypical Babbling and Communication

Around 6 to 9 months, babies usually start babbling, making sounds like “ba-ba” or “da-da,” and experimenting with different noises. This is their early attempt to communicate and engage. However, in children with autism, you may notice either a delay in babbling or a different pattern of vocalizations. Some babies with autism may not babble at all or may seem unusually quiet.

What to Look For:

• Limited use of sounds or vocal expressions.
• Lack of varied vocalizations, with sounds appearing repetitive or monotonal.
• Absence of typical back-and-forth vocal play (babies taking turns “talking” with their caregiver).

Inconsistent Response to Name

Most babies respond to their names by the time they are around 9 months old. If you call your child’s name and they don’t look up or turn toward you consistently, it might be a sign to explore. While it’s normal for babies to get distracted or occasionally ignore, persistent lack of response could be significant.

What to Look For:

• Rarely turning towards you when you call their name, even without distractions.
• Difficulty getting their attention during interactions.
• Not appearing to “tune in” to familiar voices or sounds.

Unusual Reactions to Sensory Stimuli

Infants with autism may have atypical responses to sensory input, such as touch, sound, light, or texture. Some babies may be overly sensitive, reacting strongly to everyday stimuli, while others may seem under-responsive, barely noticing certain sensations.

What to Look For:

• Overreaction to sounds (like crying or covering ears).
• Extreme sensitivity to touch, such as pulling away from hugs or resisting being held.
• Fascination with specific sensory experiences, like staring at moving lights or feeling certain textures repetitively.

Limited Gesturing or Pointing

Between 9 and 12 months, infants typically begin to point, wave, and reach toward objects as a form of communication. These gestures are part of what developmental experts call “joint attention,” where a baby uses gestures to share experiences with others. Limited or absent gesturing may indicate a challenge in social communication.

What to Look For:

• Not pointing to things of interest (e.g., pointing to a toy).
• Rarely waving, reaching, or other gestures to communicate needs.
• Difficulty engaging in “show and tell” activities, like showing you a toy.

Repetitive Movements or Unusual Focus on Objects

Some babies with autism may show repetitive behaviors, such as flapping hands, rocking, or staring at spinning objects. While all babies explore through repetition, repetitive movements in autism may appear more persistent or less connected to exploration.

What to Look For:

• Frequently flapping hands, rocking, or twisting fingers.
• Fixating on parts of toys or objects rather than using them as intended (e.g., spinning the wheels of a toy car without playing with the whole car).
• Engaging in repetitive actions without apparent purpose.

Difficulties with Social Engagement

Some infants with autism may seem less interested in engaging with others, showing little curiosity about people around them. They may appear content being alone and might not seek out interactions as other children do.

What to Look For:

• Not imitating others’ facial expressions or movements.
• Limited interest in social games like peek-a-boo.
• Little to no effort to share enjoyment or seek attention from caregivers.

What to Do If You Notice These Signs

If you observe several of these signs consistently in your infant, it’s important to trust your instincts and seek guidance. Many early signs of autism can be subtle, and observing a few behaviors does not necessarily indicate that your child has autism. However, consulting with a pediatrician or a developmental specialist can help ensure that any developmental concerns are addressed.

Supporting Your Child’s Development

Early intervention has been shown to improve social, communication, and cognitive outcomes for children on the autism spectrum. Intervention programs focus on helping infants build communication and social skills and can be adapted to each child’s unique needs.

Final Thoughts

While it can be unsettling to notice behaviors that might suggest autism, remember that recognizing these signs early is a powerful step in providing support. By seeking advice and resources, you can help your child achieve their full potential and foster a positive developmental journey.