Return to. NICHCY briefing paper, discussing how Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) fits into the category of Pervasive Developmental Disorder. www. nichcy. org/pubs/factshe/fs20txt. htm. It can be hard to know at first if a child has a pervasive developmental disorder (PDD). PDDs are a wide spectrum of social and communication disorders, including autism, that can be complicated to diagnose. All pervasive developmental disorders affect communication and social skills, kidshealth. org/parent/medical/learning/pervasive_develo. kidshealth. org/parent/medical/learning/pervasive_develop_disorders. html. Pervasive Developmental Disorders (PDD) information sheet compiled by NINDS, the National Institute of Neurological Disorders and Stroke. NINDS Pervasive Developmental Disorders Information Page. www. ninds. nih. gov/disorders/pdd/pdd. htm www. ninds. nih. gov/disorders/pdd/pdd. htm. The Council's mission is to advise and make recommendations to state agencies and the state legislature to ensure that the needs of persons of all ages with autism and other pervasive developmental disorders and their families are addressed and that all available resources are coordinated to meet those needs. www. dads. state. tx. us/autism/index. cfm. Autism Spectrum Disorders (ASD), also known as Pervasive Developmental Disorders (PDDs), cause severe and pervasive impairment in thinking, feeling, language, and the ability to relate to others. NIMH Science News about Autism Spectrum Disorders (Pervasive Developmental Disorders) www. nimh. nih. gov/health/topics/autism-spectrum-disorder. www. nimh. nih. gov/health/topics/autism-spectrum-disorders-pervasive-developmental-disorders/index. shtml. Autism Spectrum Disorders (Pervasive Developmental Disorders) DSM-IV-TR (fourth edition, text revision)1 as two of the five pervasive developmental disorders (PDD), more often referred to today as autism spectrum disorders (ASD). www. nimh. nih. gov/health/publications/autism/complete-pu. www. nimh. nih. gov/health/publications/autism/complete-publication. shtml. Individuals with these disorders do not present merely with slow or limited development, but rather with development that is atypical in the pervasive but diffuse areas of functions affected. In most cases, these disorders can be detected and distinguished from other forms of developmental delay before age 3 years. www. emedicine. com/med/topic3202. htm. Embed URL. bb&ob; border-bottom : 1px solid #E2ECF5; &cb;.