Pervasive Development Disorders
Autism falls under the category of Pervasive Development Disorders. Following is a brief description of the three most common of these types of disorders:
Autism: Children with Autism generally have difficulties in three crucial areas of development: communication, social interaction and behavior.
Pervasive Development Disorder (PDD-NOS):A child who shows signs of difficulty in two of the three categories before the age of 2 will likely be diagnosed with PDD-NOS. For instance, he/she may have limited communication and social skills, however, no restricted interests.
Asperger’s Syndrome: A child with Asperger’s Syndrome will show signs of impaired social functioning and will usually have difficulty initiating and sustaining peer attention. He/she will express limited interest in an object or activity, such as a specific toy, game or sport.