Autism looks different in every child, and no single sign means a diagnosis. What matters is the overall pattern — and trusting yourself when something feels different. Research consistently shows that the earlier support begins, the better the outcomes.
Around 6 months
Few or no big, warm smiles directed at people. Limited eye contact. Little back-and-forth sharing of sounds, smiles or facial expressions.
Around 9–12 months
Not responding to their name consistently. Not babbling back and forth. Not pointing at things to show you ("look at that!"), waving, or reaching up to be picked up. Limited interest in simple social games like peek-a-boo.
Around 16–18 months
Few or no single words. Not pointing to objects of interest. Not imitating simple actions. Strong preference for playing alone. Repetitive movements such as hand-flapping or spinning, or intense fixation on parts of toys (spinning wheels rather than rolling the car).
Around 24 months
No meaningful two-word phrases (not counting imitating or repeating). Loss of speech, babbling or social skills the child previously had — any loss of skills at any age warrants an evaluation right away. Difficulty with changes in routine. Unusual reactions to sounds, textures, lights or smells.
Signs at any age
- Delayed speech or language skills
- Difficulty understanding other people's feelings
- Repeating words or phrases (echolalia)
- Getting very upset by small changes
- Intense, narrow interests
- Avoiding or resisting physical contact
What to do if you recognize your child here
Talk to your pediatrician and ask specifically for a developmental screening — the American Academy of Pediatrics recommends autism screening at 18 and 24 months. You do not need a diagnosis to ask, and you do not need to wait and see. If you are told to wait, it is reasonable to request a referral to a developmental specialist anyway.
Why early matters
Young brains are remarkably adaptable. Early ABA therapy focuses on communication, social connection and daily living skills during the window when learning happens fastest. Families who start early often see progress in areas that felt out of reach: first words, following routines, playing with siblings, sleeping and eating better.
If you have concerns, we are happy to talk — no diagnosis required to start a conversation. Call (786) 652-6945 or send us a message.