1) Autism
2) Asperger Syndrome
3) Pervasive developmental disorder - not otherwise specified (PDD-NOS)
4) Rett Syndrome
5) Childhood disintegrative disorder
The word "autism" was first used in 1911. It wasn't until the 1960's that researchers began to put autism in its own category. In 1994, DSM-IV was introduced to clarify the characteristics and criteria needed for an autism diagnosis. Autism spectrum disorders affect 3 main areas: communication, socialization, and behavior. Others areas of development, such as fine motor skills and sensory processing, may also be affected.
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