Diagnosing autism
At present, there is no definitive medical test to identify individuals with autism spectrum disorders. Professionals diagnose autism spectrum disorders through the presence or absence of certain behaviours, characteristic symptoms and developmental delays. ASD is diagnosed through an assessment which includes observing and meeting with the individual, their family and other people who interact with the child. Information is gathered regarding the individual’s strengths and difficulties, particularly in the areas of social interaction and social communication as well as restricted and repetitive interests, activities and behaviours.
There is no single behaviour that indicates ASD. Symptoms can range from mild to severe, and can change as the child grows. No two children with ASD are alike. This makes understanding the condition and finding the best therapies difficult.
There are no blood tests that can detect ASD. Developmental pediatricians, psychiatrists and psychologists with experience in assessing individuals with ASD are qualified to make a diagnosis.