Everything you need to know Children Find out how to get a referral for your child and how we can support you through the diagnosis process. Adults Do you think that you or someone you know may be autistic? Read about the diagnosis and support services available. What's next? Get your free booklets offering practical advice about what to do after receiving an autism diagnosis. Professionals involved Find out more about the different professionals who can support you and your family through diagnosis. Autism profiles and diagnostic criteria Find out about different autism profiles, diagnostic tools and criteria.