The earliest reliable signs of autism usually appear between 12 and 24 months, and some are visible as early as 9 months. They are mostly about social communication – whether a child shares attention, responds to their name, points at things, and looks back at you to check you have noticed. A child does not need to have every sign. One or two, consistently, is reason enough to ask for an assessment.
If you have landed here at 11pm after watching your child line up their toy cars for the fourth time this week, take a breath. Nothing you read tonight will diagnose your child. What this guide can do is help you tell the difference between the enormous, normal range of how children develop and the specific patterns that are worth showing to a professional.
Why the early window matters so much
The brain is at its most adaptable in the first few years of life – neuroplasticity, in clinical language. Support given at two years old does more, more easily, than the same support given at six.
This is not a deadline, and it is not a reason for panic if your child is already older. Children make meaningful gains at every age, and we work with children well into their school years. But it is the honest reason we ask parents not to wait a year to “see how things go.”
In our experience, the most common thing that delays a child’s first assessment in Jaipur is not cost or access. It is the well-meaning advice from relatives that “boys speak late” or “my nephew didn’t talk until four and he’s fine now.” Sometimes that is true. Sometimes it costs a child two years of the window in which help works best. An assessment costs you one afternoon. It is the cheapest way to stop wondering.
Signs by age
Use this as a prompt for observation, not a checklist to score. Note what you actually see over a normal week – not on the one day your child is tired, unwell, or in an unfamiliar place.
| Age | What to look for |
| By 6 months | Few or no big, warm smiles directed at you Limited eye contact, or eye contact that feels hard to catch and hold |
| By 9 months | Little back-and-forth sharing of sounds, smiles, or facial expressions Does not turn toward you when you make a familiar sound |
| By 12 months | Does not respond to their own name – significant, and worth checking hearing first Little or no babbling No back-and-forth gestures: pointing, showing, reaching up, waving bye-bye |
| By 16 months | No single words yet |
| By 18 months | No pretend play – no feeding a doll, no pushing a block along as if it were a car Does not point to show you something purely to share it with you |
| By 24 months | No meaningful two-word phrases of their own (copying a phrase you just said does not count) |
| At any age | Loss of speech, babbling, or social skills a child previously had. This is called regression, and it warrants a prompt assessment at any age. |
The pattern parents describe most often
Beyond milestones, families usually arrive describing some combination of these:
- Around connection. Your child seems content alone for long stretches. They may bring you an object they want opened, but not to share the pleasure of it. They may not look back at your face to check your reaction.
- Around language. Speech is absent, delayed, or unusual – repeating phrases from cartoons, speaking in a sing-song rhythm, or using a memorised sentence in place of an original one.
- Around routine. A change of route, a different plate, or the wrong order of a bedtime sequence produces distress that feels far larger than the change deserves.
- Around movement and repetition. Hand-flapping, spinning, walking on toes, lining up objects, or fixing intently on a spinning wheel or fan.
- Around the senses. Covering the ears at the mixer or in a crowded market. Refusing whole categories of food by texture. Distress at haircuts, nail-cutting, or clothing tags. Or the reverse – seeking out crashing, spinning and pressure, and seeming not to notice pain.
That last cluster is worth naming clearly, because it is so often dismissed as fussiness. If it is the part that sounds most like your child, our guide to sensory integration therapy in Jaipur goes into it in far more depth.
What these signs are not
Being honest about this matters more than filling a page with worry.
A late talker is not automatically autistic. Many children with a speech delay are socially engaged, point, share attention, and play imaginatively – and simply need speech therapy. The distinguishing question is not how much a child says. It is whether they are reaching for connection.
A shy child is not an autistic child. Shyness usually eases with familiarity. A child who is warm and chatty at home and silent at a birthday party is behaving normally.
A sensory-sensitive child is not necessarily autistic. Sensory processing difficulties occur on their own, and alongside ADHD, prematurity, and anxiety.
Screen time does not cause autism. Autism is a neurodevelopmental difference with a strong genetic component. Heavy screen use can worsen attention and reduce language exposure, which is a good reason to limit it – but it is not the cause, and parents carry enough guilt already.
When to book an assessment
Book one if:
- Your child shows any of the age-based signs above, consistently
- Your child has lost any skill they previously had – at any age, without waiting
- Your child is between 16 and 30 months and you have a persistent, quiet worry you cannot shake
That last one is not a soft criterion. Parental concern is one of the more reliable early indicators in the research, and it consistently precedes formal diagnosis by a long margin.
The international standard is developmental screening at 18 and 24 months, with a validated tool such as the M-CHAT-R for children aged 16 to 30 months. In India this rarely happens automatically, so it usually falls to parents to ask.
Have hearing tested first, or alongside. A child who does not respond to their name may not be able to hear you well. It is a quick test and it removes a large question.
What an assessment actually involves
Parents often delay because they imagine something frightening. It is not.
There is no blood test and no scan for autism. Assessment is structured observation and detailed history-taking. At our Durgapura centre it looks roughly like this:
- A conversation with you. Pregnancy and birth history, milestones, family history, your specific concerns. You know your child better than any clinician will after one session – this is the most valuable part.
- Play-based observation. We watch how your child explores, responds to their name, shares attention, plays, and handles a small change in routine. To your child, this is a session with toys.
- Standardised screening and developmental profiling, appropriate to age.
- A feedback conversation, in plain language, with a written plan – whether or not autism is the conclusion.
You leave with a direction, not a label.
If the assessment does indicate autism
There is no medication that treats autism itself. What helps is targeted, consistent therapy built around your particular child – and, crucially, around your family.
At Paramount, the therapies we most often combine are:
- Applied Behaviour Analysis (ABA)– structured, goal-based work on communication, daily living skills, and behaviours that get in the child’s way
- Speech therapy – spoken language where possible, and alternative communication where it is not, so the child has some way to be understood
- Occupational therapy – self-care, fine motor skills, attention, and the sensory regulation that underpins all of it
- Sensory integration therapy – for the sensory profile specifically, in a properly equipped therapy gym
These are not separate silos. Our occupational therapists, speech-language pathologists, special educators and child psychologists work as one team around a single plan, which is why an integrated autism therapy centre tends to move faster than four unconnected appointments across the city.
The other half of the work is yours, and we will teach it to you. Children spend a few hours a week with us and every other hour with you. Parent training is not an add-on to the programme; it is most of the programme.
Frequently asked questions
A diagnosis can be reliable from around 18 to 24 months in the hands of an experienced clinician, and signs are often visible earlier. Many children are diagnosed considerably later, usually because early signs were attributed to a speech delay or to a quiet temperament.
Yes. Reduced eye contact is common but not universal, and many autistic children make good eye contact with familiar people at home. No single sign rules autism in or out.
No, and that is the wrong frame. Autism is a difference in how the brain develops, not an illness. Therapy does not remove autism; it builds communication, independence and self-regulation so a child can participate in their own life with far less distress.
No. Therapy is directed at a child’s actual difficulties – communication, motor skills, sensory regulation – not at a label. We frequently begin support while assessment is still in progress.
No. Multilingual exposure does not cause language delay or autism. Children raised with Hindi, Rajasthani and English manage all three. If language is not developing, look for the reason elsewhere.
If something here sounded like your child
Bring it to us. An assessment is one afternoon, and either it reassures you or it starts something useful – both outcomes are better than another six months of quiet worry.
Paramount Child Development Centre runs integrated autism assessment and therapy at Durgapura, Jaipur and at Sikar, under a team of occupational therapists, speech-language pathologists, special educators and child psychologists [link to /our-team/].
Book a developmental screening: +91 6376 345 510 · WhatsApp us
This article is for general information and does not replace an individual assessment by a qualified professional. If you have concerns about your child’s development, please consult a paediatrician or child development specialist.
