There is no set age where Autism can be detected for each child, however many children with autism will start presenting signs of Autism Spectrum Disorder as young as 18 months. With that said, children can go undiagnosed into their teens and adulthood. If you think you are a loved one may have Autism Spectrum Disorder, and would like to recieve a professional assessment, contact Waystone Psychology to learn more about our assessment process today.