Is pdd an autism spectrum disorder, if so, what does this mean?

Yes: Pdd is an autistic spectrum disease because the affected person has difficulty reading social cues and relating properly to emotional content. High functioning autistic spectrum individuals have language and can give dissertations on concrete subjects. Watch the film "temple grandin".

See Below: Pdd means pervasive developmental disorder. Sometimes is added nos not otherwise specified. This is sometimes referred to as a catch-all category. It is the term used when a child has several features of ASD autism spectrum disorder, but not all the criteria to have the formal ASD diagnosis.

Terms are changing: For several decades, pdd (pervasive developmental disorder) was the broad term that included autism asperger's disorder, and several other rare but similar disorders. Gradually, the term autism spectrum disorder (ASD) has gained favor, and the new manual appear to be doing away with pdd in favor of ASD as the broad term. Also, autism and asperger's disorder by go away as distinct diagnoses.