The autism diagnosis age and intensity of autism’s early signs vary widely. Some infants show hints in their first months. In others, behaviours become obvious as late as age 2 or 3.
Not all children with autism show all the signs. Many children who don’t have autism show a few. That’s why professional evaluation is crucial.
It is important to understand that:
- No single behaviour is indicative of autism, nor will a child show all the behaviours listed. The significant factor is a pattern of behaviours from each of the four essential areas. They are language or communication, ways of relating to people, responses to sensory stimuli, and developmental discrepancies.
- Some of the behavioural indicators may be intense, while others may be relatively mild.
- Some of the behaviours that indicate autism are typically seen at specific stages of normal development. The significant difference in autism is the intensity of the behaviour and the persistence of the behaviour beyond the normal developmental stage.