这个词是什么意思？
A return to earlier, especially to infantile, patterns of thought or behavior, or stage of functioning, e.g., feelings of helplessness and dependency in a patient with a serious physical illness. (From APA, Thesaurus of Psychological Index Terms, 1994).
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012043 · MeSH 2026。
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