二人組精神病(感応精神病)の幼児例

A Case of a Girl with Folie à Deux(Induced Delusional Disorder)

抄録　統合失調症の母が精神病症状を悪化させたのを機に，母の妄想に影響された二人組精神病の幼児例を報告した。患児が5歳になる頃に母の妄想が顕在化し，妄想に左右され母子だけでひきこもるという母子密着状態となった。母子の生活環境を分けた後，患児の妄想的確信は徐々に消退した。母が寛解後，母子は徐々に良好な関係を再構築したが，その回復過程は，マーラーの分離個体化理論に沿った情緒的成長過程の繰り返しであった。

　We report the case of a girl with folie à deux who was affected by her schizophrenic mother's delusions. The mother's delusions became apparent when the girl was five years old. The mother and girl were affected by the delusions and consequently became withdrawn and isolated. After they were separated in their environment, the girl's delusional beliefs gradually disappeared. Following the mother's remission, the mother and girl gradually rebuilt a good relationship. The recovery process was a repetition of the girl's emotional growth process in accordance with Mahler's separation-individuation theory.