广泛性发展障碍（Pervasive Developmental Disorder；简称PDD），是一个与特殊性发展障碍（Specific Developmental Disorders；SDD）相对的名词，专指一组五种与多种基本功能的发展障碍，例如：社会化及沟通能力相关的精神异常。 根据DSM-IV诊断标准，广泛性发展障碍包括以下五个类别：

The diagnostic category pervasive developmental disorders (PDD), as opposed to specific developmental disorders (SDD), refers to a group of five disorders characterized by delays in the development of multiple basic functions including socialization and communication. The pervasive developmental disorders are pervasive developmental disorder not otherwise specified (PDD-NOS), which includes atypical autism and is the most common; autism, the best-known, now understood to be part of a spectrum; Asperger syndrome; Rett syndrome; and childhood disintegrative disorder (CDD).