Early signs of autism in babies and toddlers

What counts as an "early sign"

Early signs are patterns you notice over time, not a single behavior on one day. Many toddlers have quirks or phases. What matters is whether social communication and play are developing in a typical direction, and whether differences are consistent across settings.

Common signs parents notice first

• Social attention: limited eye contact, fewer smiles back, or not noticing when you enter a room.
• Communication: fewer gestures (pointing, showing), delayed babbling, or fewer attempts to get your attention.
• Play: repetitive play (lining up, spinning), or less pretend play for age.
• Sensory differences: distress with certain sounds/textures, or seeking intense movement/pressure.
• Rigid routines: strong reactions to changes, transitions, or unexpected stops.

What to do if you're concerned

Start by writing down what you see, when it happens, and what helps. Bring that to your pediatrician and ask for an autism screening and a referral for a full developmental evaluation. If you feel dismissed, you can ask for a second opinion or request a referral directly.

What an autism evaluation may include

Evaluations often include a parent interview, developmental history, structured play and interaction activities, and screening tools. Some families see a developmental pediatrician, psychologist, neurologist, or a multidisciplinary team. The goal is to understand your child's strengths and support needs.

How early support can help (even before a diagnosis)

You do not need to wait for a label to start teaching skills. Early support can focus on communication, joint attention, play, flexible routines, and reducing frustration. In-home ABA often emphasizes parent coaching and simple strategies that fit real-life routines.