The short answer: a speech delay affects how a child talks. Autism also affects how a child connects — eye contact, pointing, sharing attention, responding to their name. A child who talks late but points, waves, and pulls you to show you things is usually delayed, not autistic. When connection is also different, get an assessment.
That is the sixty-second version. Here is the fuller picture our paediatric team walks parents through.
What the two look like side by side
A two-year-old with a plain speech delay usually communicates in every way except words. She points at the biscuit tin. She looks at you, then at the dog, then back at you — did you see that? She waves bye-bye, responds to her name, brings toys to show you, and gets frustrated precisely because she has so much to say and no words for it yet.
A two-year-old on the autism spectrum often shows differences beyond words: little or fleeting eye contact, not pointing to share interest, not responding consistently to their name, few gestures, repetitive play like lining up toys or spinning wheels, and strong distress at small changes in routine.
The overlap is real — many autistic children also have delayed speech, which is why the question is so common and why “wait and see” is the wrong tool for answering it.
The signs that matter more than words
Clinicians weight these heavily because they separate the two pictures earlier and more reliably than word counts:
- Pointing to share (not just to ask) by 12–15 months
- Response to name — consistent by around 12 months
- Gestures — waving, clapping, lifting arms to be picked up
- Shared attention — following your point, looking where you look
- Showing — bringing objects to you just to show them
A child who is behind on words but strong on all five of these has a very different starting picture from a child who is behind on several.
What to actually do
If your child is past 16–18 months with no words, or past 24 months with fewer than 50 words and no two-word phrases, book an evaluation regardless of which explanation you suspect — both the Indian Academy of Pediatrics and the American Academy of Pediatrics recommend evaluating rather than waiting. If any of the connection signs above are also missing, say so explicitly when you book; it changes what the assessment covers.
The good news is the same either way: the earlier the right support starts, the better the trajectory — and the first step is a single structured assessment, not a label. Our developmental paediatrician offers a free 30-minute consultation to give you an honest read of which picture your child fits.
