Autistic Disorder

What it is

One of the three Autism Spectrum Disorders (ASD), as outlined in the Diagnostic and Statistical Manual (DSM-IV), and one of the five conditions of the Pervasive Developmental Disorder (PDD) category. Autistic Disorder is characterized by severe impairment in social interaction, communication (could be non-verbal) and repetitive and restrictive patterns of behaviour that are non-functional.