ASD symptoms are typically seen within the first two years of life. Because of this, it is recommended by the American Academy of Pediatrics that all children are screened by a healthcare provider at 18-month and 24-month check ups. During the screening, a questionnaire, clinical observations, and cognitive tests are usually done. Testing choices and diagnosis is up to the discretion of the healthcare provider.[1]
How is autism spectrum disorder diagnosed?
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•Last Updated: May 16, 2025
Autism spectrum disorder (ASD) is typically diagnosed through screenings recommended by the American Academy of Pediatrics at 18 and 24 months, during which healthcare providers use questionnaires, clinical observations, and cognitive tests. The specific testing methods and diagnosis are determined at the healthcare provider's discretion.