PDD-NOS is the diagnosis used for a person who appears on the Autism Spectrum, but does not meet the full criteria or only displays mild symptoms. Like the other ASDs, PDD-NOS is characterized by delays in the development of socialization and communication skills.
Early symptoms 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.
Changes to PDD-NOS Diagnosis: Social Communication Disorder was added to the latest Diagnostic and Statistical Manual of Mental Disorders (DSM) in May of 2014 and is now going to act as replacement diagnosis for PDD-NOS. A few changes were made to this diagnosis and it is now applied to individuals with language delays and may not include restrictive or repetitive interests commonly found in ASD.
Autism Speaks Inc. (2005-2011). www.autismspeaks.org. Retrieved 2015, from Autism speaks: http://www.autismspeaks.org/