PDD-NOS (Pervasive Developmental Disorder-Not Otherwise Specified)
Used to describe Autism Spectrum Disorders characterized by the presence of some, but not all of the defining symptoms of Autism.
PDD-NOS is characterized by delays in the development of socialization and communication skills. Parents may notice associated behaviors as early as infancy. These may include delays in using and understanding language, difficulty relating to people, unusual play with toys and other objects, difficulty with changes in routine or surroundings and repetitive body movements or behavior patterns.