Recognizing early signs and symptoms of Autism Spectrum Disorders(ASD)  can lead to early diagnosis, intervention, and long-term positive results.

In some kids, signs of autism are recognizable as early as infancy. Other kids may not show noticeable early warning signs until they are toddlers, or even later. Not all kids share the same symptoms and behaviors. And kids without autism may demonstrate characteristics typical of autism. That’s why an autism diagnosis often requires a professional evaluation.  


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What Are The Early Signs of Autism in Toddlers? 

Here are a few signs and repetitive behaviors you may notice in toddlers and young children who have autism. Remember, autism is a spectrum disorder. Symptoms and signs of ASD  vary from person to person, and these behaviors can be more or less severe depending on the child.

  • Has trouble communicating, low communication skills and low language skills (e.g. asking for help, expressing wants and needs)
  • Is less expressive through sounds, words, and gestures than other kids their age
  • Doesn’t respond to their name
  • Has language delay and delayed speech
  • Avoids making eye contact
  • Has little interest in others, social interaction and low social skills
  • Does not typically smile back or use other engaging facial expressions (e.g. pointing, waving)
  • Has unusual playtime habits
  • Does not like to play “pretend” with dolls and figurines
  • Has sensory issues (e.g. has a strong reaction to certain sounds, loud noises, textures, smells, etc.)
  • Engages in repetitive movements (e.g. flapping hands, rocking body)
  • Uses repetitive words or phrases (or echolalia)
  • Has difficulty with small changes in routine
  • Has specific or obsessive interests
  • Has developmental delays

This list can be used as a starting point, however it is not all-encompassing. provides additional information about the signs of autism here. You can also visit Autism Speaks for age-specific signs of autism and a modified checklist for autism in toddlers..

The Importance of Early Intervention 

A tremendous amount of brain development occurs in the first few years of life. During these months of age , the brain is extremely flexible and able to change, adapt, and form new pathways more easily. This is referred to as brain plasticity, or neuroplasticity. Essentially, it’s much easier for a toddler brain to change and learn new things. That doesn’t mean an important change in a child’s development can’t happen later on. It just means that early intervention can give kids the best possible chance to reach their full potential. Understanding the early signs of autism spectrum disorder is a key part of treating developmental disabilities early on. 

Types of Support for Autism in Toddlers

Autism in toddlers affects kids and families in different ways. There are many types of interventions and systems of support for autism. Early intervention of ASD might include speech and language therapy, occupational therapy, family training, behavioral intervention, and nutrition services. It may take some exploration before you find the right fit for your child and family. One helpful person you can start a conversation about early intervention with is your child’s pediatrician. Some public school districts also offer evaluations and early intervention services to pre-school aged children. Visit your school district website, or speak to the ESE contact at your child’s zoned school,  for more information about school based resources.