| 释义 |
pervasive developmental disordern.（名词）abbr. PDD【缩写】- Any of several disorders, such as autism and Asperger's syndrome, characterized by severe deficits in many areas of development, including social interaction and communication, or by the presence of repetitive, stereotyped behaviors. Such disorders are usually evident in the first years of life and are often associated with some degree of mental retardation.广泛性发展障碍症：数种发展性障碍如自闭症与亚斯普杰氏症候群等，特征为包括社交互动与沟通、重复行为或刻板行为等多重重度发展缺陷。这些障碍通常于出生后一年便很明显，成因常与智力障碍有关
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