Autism spectrum disorders are devastating neurodevelopmental disorders. Although diagnosis and therapeutic interventions usually take place in infancy, they are chronic lifelong conditions. Surprisingly, the literature on autism spectrum disorders in adults is scarce. Moreover, most mental health professionals working with adults have little training in autism, and adult mental health services around the world are rarely prepared to address the needs of these patients, which tend to increase with age. This book therefore fills a crucial gap in the literature and will prove useful for all who care for and deal with adults in the Autistic Spectrum.