Autism Symptoms



for Toddlers

Autism symptoms normally become evident during the toddler years, Early detection is advantageous to begin proper treatment and interventions as young as possible. The average age for an autism diagnosis is between three and four years old. Yet many parents first become concerned around 18 months old.

CDC (Centers for Disease Control) has a list of milestones for specific age groups which is a great guide from birth to five years of age. The problem in detecting autism is that some children develop slower than others so being a few weeks late reaching one particular milestone is nothing to worry about. You should only be concerned if your child is consistently late over a range of the listed milestones.

The following is a quick list of common autism symptoms to check if you think you need to further investigate the level of your child’s development.

• Has problems speaking or understanding speech• Does not interact with other children• Seems distant to surroundings• Is uncommunicative• Has uncontrollable temper tantrums• Insists on routine and resists change• Engages in repetitive actions

A simple evaluation can be done by a pediatrician who can also rule out physical conditions which may be affecting your child’s behavior. National Institute of Child Health and Human Development lists the following milestones for parents to determine whether they need to have their child evaluated.

• Not babbled or cooed by 1 year of age• Not gestured, pointed, or waved by 1 year of age• Not spoken a single word by age 16 months• Not spoken a 2-word phrase by 2 years of age• Loses previously achieved language or social skills at any time

One tip for parents who suspect a development disability would be to take plenty of home videos. Movement and behavior of your child over multiple development stages can then be observed by doctors and others involved in their diagnosis.

A fully autistic child normally has distinctive patterns of movement – clumsiness, violent outbursts, and repetitive movements. Those children with milder forms of autism spectrum disorders may not have the coordination problems prevalent in full autistic individuals.




Find autism symptoms checklists for other ages.

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