PERVASIVE DEVELOPMENTAL DISORDERS
Defining Pervasive Developmental Disorders (PDDs) in Historical Context Pervasive Developmental Disorders, or PDDs, constituted a significant residual diagnostic category within the fourth edition, text revision, of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR). This classification grouped together a spectrum of severe and complex neurodevelopmental conditions characterized by profound impairments in several core areas […]