Asperger syndrome is an autism spectrum disorder, usually with life-long consequences for social interaction and behaviour. The disorder is neurodevelopmental and symptoms appear in the preschool years. Individuals affected are often misunderstood and sometimes misdiagnosed when they apply for help. A Guide to Asperger Syndrome is an accessible 2002 handbook for all those touched by Asperger syndrome, one of the most common variants of disorders in the so-called autism spectrum. In it, Christopher Gillberg, a world-renowned authority in the field, gives an in-depth account of symptoms, diagnosis, prevalence, background factors, prognosis and intervention. The book is intended for a wide readership, including those affected, their families, and clinicians working with children, adolescents and adults with Asperger syndrome.