Everything you need to know Autism Learn the basics about the autism spectrum and how it's defined. Asperger syndrome A form of autism, characterised by the triad of impairments. What is PDA? Find out more about recognise Pathological Demand Avoidance (PDA) and how it fits into the autism spectrum. Broaching the subject Do you think a family member or friend is autistic? The discussion needs to be handled with care. Causes and 'cures' Autism is a lifelong condition and there is no known cure, but support can improve quality of life. Describing autism How do you talk about autism? What terms do autistic people use to describe themselves? Research Read the latest developments and find out how we can support your research. Our autism library Autism Data is the catalogue for our library of published research papers, books, articles and videos. Gender Why are more boys than girls diagnosed as autistic, and how does autism affect women and girls? Autism facts and history Find out how many people have autism, how many adults want extra support at work and much more. Related conditions Learn about other conditions that many autistic people also have, such as ADHD or dyspraxia.