Your child is growing every day. But sometimes, something feels different. Maybe your baby is not making eye contact. Maybe your toddler has stopped responding to their name. Maybe your child prefers sitting alone rather than playing with other kids.These moments can leave any parent feeling confused and unsure of what to do next.
The good news is , the earlier you spot the signs, the sooner your child gets the right support. Early therapy makes a real difference in how a child develops. This guide explains the early signs of autism in children in plain, simple language so you know exactly what to watch for and what to do next.
What are the early signs of autism in children? –
Early signs of autism in toddlers include limited eye contact by 6 to 9 months, no babbling by 12 months, no single words by 16 months, no two-word phrases by 24 months, loss of previously learned skills, repetitive behavior, and little interest in other children.. Early assessment and therapy before age 3 leads to the best outcomes.
What Is Autism — In Simple Words
Autism, or Autism Spectrum Disorder (ASD), is a condition that affects how a child communicates, behaves, and relates to the world around them.
The word “spectrum” means autism looks different in every child. Some children show mild signs.Some children may require additional support in their everyday activities. No two children with autism are exactly alike.
The World Health Organization estimates that approximately 1 in every 100 children globally is diagnosed with autism. In India, many children go undiagnosed for years simply because parents are not aware of the early warning signs.
Autism is not a disease. It is a difference in how the brain develops. With the right therapy — children with autism can make real, lasting progress.
Why Early Action Matters
Early signs are commonly noticed between 12 and 24 months of age.Many wait, hoping things will change on their own.
The American Academy of Pediatrics confirms that early intervention before age 3 leads to significantly better outcomes in language, social skills, and behavior. The brain is most flexible in the early years — that is when therapy works best.
If something feels off, trust that feeling. Speak to a child development specialist. Early clarity is always better than waiting.
Child Development Milestone Chart — 0 to 5 Years
If your child is missing several milestones across more than one area, speak to a specialist without delay.
| Age | Communication | Social Skills | Movement |
| 0–6 months | Coos, babbles, reacts to voices | Smiles back, begins making eye contact | Holds head up, tracks objects |
| 6–12 months | Says “mama/dada”, responds to name | Waves, plays peek-a-boo | Sits without support, crawls |
| 12–18 months | Says 1–3 words, points at objects | Shows interest in others | Stands, begins walking |
| 18–24 months | Uses 2-word phrases | Plays alongside other children | Runs, climbs with help |
| 2–3 years | Short sentences, follows instructions | Takes turns in play | Jumps, kicks a ball |
| 3–5 years | Tells simple stories, asks questions | Makes friends, understands feelings | Hops, draws basic shapes |
Early Signs of Autism by Age
Babies — 0 to 12 Months
At this age, babies are just starting to connect with people around them. These signs are easy to miss but important to notice:
Limited or reduced eye contact by 6 to 9 months — note that eye contact alone is not a diagnosis, but when combined with other signs, it is worth discussing with a specialist
- Does not smile back when you smile at them
- Does not respond to their name by 9 months
- Does not babble, coo, or make sounds
- Does not wave, point, or use gestures by 12 months
- Feels unusually stiff or limp when held
No single sign confirms autism. But if you notice several of these together, speak to a child development specialist.
Toddlers — 1 to 2 Years
This is the age where most parents notice clear differences. Watch for these signs of autism in a 2-year-old:
- No single word spoken by 16 months
- No two-word phrases by 24 months, like “want juice” or “go out”
- Lost words or skills they previously had — this is called regression
- Does not point to show interest in things around them
- Little eye contact during play or conversation
- Gets very upset when small daily routines change
- Repeats the same action again and again — like spinning objects or lining up toys
If your child had words and then stopped, see a specialist immediately. Regression is one of the clearest warning signs.
Children — 3 to 5 Years
By preschool age, signs become more visible — especially in group settings:
- Finds it hard to make or keep friends
- Does not understand how others are feeling
- Repeats phrases heard from TV or others — called echolalia
- Gets overwhelmed by sounds, lights, or certain textures
- Very fixed daily routines — gets distressed when anything changes
- Intense focus on one or two topics only
- Avoids eye contact during conversation
Autism vs Speech Delay — Key Differences
This is one of the most common questions parents ask. Here is a clear side-by-side comparison:
| Feature | Speech Delay | Autism |
| Eye contact | Usually normal | Often limited or reduced |
| Pointing and gestures | Present | Often missing |
| Response to name | Usually responds | Often does not respond |
| Interest in others | Shows clear interest | Prefers to be alone |
| Repetitive behavior | Not typical | Very common |
| Regression | Rare | Common — loses skills previously had |
| Sensory sensitivity | Not typical | Very common |
| Response to therapy | Often responds well to speech therapy | Usually needs multiple therapies together |
What is the difference between autism and speech delay? A child with a speech delay still connects with people through eye contact, pointing, and gestures. A child with autism often shows limited eye contact, does not point, does not respond to their name, and shows repetitive behavior — even if they speak some words. Only a qualified specialist can confirm the difference after a proper developmental assessment.
A child with only a speech delay usually still tries to connect. A child with autism may not do these things even if they speak. If you have concerns about your child’s communication, an early speech therapy assessment is a good first step.
What Is Sensory Sensitivity
Many children with autism feel things more strongly than other children. Your child may cover their ears at normal sounds, refuse certain clothing because of how the fabric feels, avoid being touched, or constantly seek movement like rocking or spinning.This is not bad behavior. The brain is simply processing the world in a different way.
Sensory Integration Therapy helps children manage these responses safely and gradually. Many child development centres in Kerala now offer this as part of a complete autism therapy program.
What to Do If You Notice Signs
Step 1 — Write down what you are seeing. Note the specific behaviors, how often they happen, and when they started. This helps the specialist understand your child quickly.
Step 2 — Talk to your pediatrician. Share your notes and ask for a referral to a child development specialist.
Step 3 — Get a developmental assessment. A trained professional will assess your child using tools like the M-CHAT — Modified Checklist for Autism in Toddlers.
Step 4 — Start therapy as early as possible. You do not need a confirmed diagnosis to begin therapy. Early intervention works even before a formal label is given. The sooner it starts, the better the outcome.
One mother from Pathanamthitta noticed her 2-year-old had stopped using words and was showing limited eye contact. After starting occupational and speech therapy together, she began to see meaningful changes over the following months. Her only regret was not acting sooner.
If you are looking for autism therapy, look for a centre with certified therapists, a structured therapy plan, and a safe, child-friendly space.
Early signs of autism in children are not always easy to see — but they are there. Catching them early gives your child the best possible start.
Watch for missing milestones, repetitive behavior, and limited eye contact. Use the autism vs speech delay table to understand the difference. And if something feels off — act on it. Early support changes outcomes in ways that later therapy simply cannot replicate.
Book a consultation with a child development specialist near you. Take the first step today — your child’s progress starts with one conversation.
Disclaimer : This content is for informational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare professional or child development specialist for diagnosis and treatment.
FAQs
Research points to a combination of genetic and environmental factors that affect brain development. It is not caused by parenting style, vaccines, or anything a parent did during pregnancy. This has been confirmed by global health organisations including the WHO and CDC.
Genetics plays a role. Autism tends to run in families, but having a family member with autism does not mean a child will definitely develop it.
No. But with early therapy, children with autism can make significant progress in communication, behavior, and daily life skills. The goal is to give them the tools they need to live well and grow with confidence.
Autism does not have a single known cause, but research shows it is mainly linked to three key factors:
- Genetics – Autism can run in families and is influenced by inherited genes.
- Brain development differences – Variations in how the brain grows and connects during early development.
- Environmental influences – Factors such as advanced parental age or certain prenatal conditions may play a role.
Certain factors can increase the likelihood of autism, though they do not guarantee it:
- Having a family history of autism
- Older parents at the time of birth
- Premature birth or low birth weight
- Certain genetic conditions (like Fragile X syndrome)
- Differences in early brain development
It’s important to remember that these are risk factors, not direct causes. A child can have one or more of these and still develop typically.
