delusion of jealousy

...This is called the Cain complex, and comes from the story of Cain in the Old Testament, who killed Abel out of jealousy, so Cain was the first jealous person in human history. From the definition above, people with a strong desire to possess generally also have strong jealousy, but when it exceeds the normal range, it becomes a delusion of jealousy. In schizophrenia, as part of a persecution complex, a person may believe that their spouse is cheating on them, and in chronic alcoholism, a person is prone to similar delusions due to their loathing for their wife and their own sexual impotence.

*Some of the terminology explanations that mention "delusion of jealousy" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これをカイン･コンプレクスといい，アベルをねたんで殺した旧約聖書のカインの故事に由来するが，さしずめカインは人類最初の嫉妬者だったことになる。さきの定義から，所有欲が強い人は一般に嫉妬心も強いが，それが正常範囲を越えると〈嫉妬妄想delusion of jealousy〉になる。精神分裂病では被害妄想の一環として，自分の配偶者が外で不貞を働いていると信じこみ，慢性アルコール中毒では妻への嫌悪感と本人の性的不能から同様の妄想を抱きやすい。…

※「delusion of jealousy」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報