What are Autism Spectrum Disorders?
Autism Spectrum Disorders (ASD), also known as Pervasive Developmental Disorders (PDDs), cause severe and extensive impairment in thinking, feeling, language, and the ability to relate to others. These disorders are usually first diagnosed in early childhood and range from a severe form, called autistic disorder, through pervasive development disorder not otherwise specified (PDD-NOS), to a much milder form, Asperger syndrome. They also include two rare disorders, Rett syndrome and childhood disintegrative disorder.
- Autism Information (HHS)
- Pervasive Developmental Disorders Information Page (NINDS)
- Learn the Signs. Act Early. Autism Spectrum Disorders (CDC)
- Autism Spectrum Disorders (CDC)
- Autism Spectrum Disorders (ASDs) (National Institute of Child Health and Human Development)