PMID: 15230353Jul 3, 2004Paper

Folie à deux in schizophrenia--"psychogenesis" revisited

Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica
Mitsue Shimizu

Abstract

Since the 19th century, many studies have reported on folie à deux (FAD) in subjects with endogenous psychosis. However, the etiology of FAD in patients with schizophrenia has remained unclear, primarily because the possible psychogenic or reactive mechanisms of delusional contagion supposed in FAD were not compatible with the classical concept of endogenous psychosis. However, possible psychogenic mechanisms of FAD in schizophrenia were argued by Bleuler, E and Bleuler, M. The problem of how to distinguish the endogenesis from the psychogenesis (reaction) in FAD results in an aporia well-discussed in the German-speaking psychiatry: how induction in endogeneous psychosis might be possible? In the present study, first, a case of FAD in a husband and wife both with schizophrenia was reported. Three case reports of FAD in schizophrenic married couples from Japanese literature were also examined and the concept of the mind which lies in the background of psychogenesis/endogenesis dicotomy was discussed. A 34-year-old housewife had constructed a persecutory delusion shortly after the death of her father. She became convinced that her relative who was a Yakuza (Japanese Mafia) member was planning to kill her. She also reported audito...Continue Reading

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