这个词是什么意思？
A disorder beginning in childhood. It is marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest. Manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual. (DSM-V)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001321 · MeSH 2026。
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