DeMontyel (1881) divided folie a deux into three subgroups: fo!ie simu!tanée, in which there is the coincidental, simultaneousbutindependent appearance of psychotic symptoms in two family members who are predisposed to a psychosis and who are living together; bIle communiquée,in which two persons who are at risk from developing a psychosis become psychotic, but each subject adopts one or more...

Introduction. Shared psychotic disorder, or folie ? deux, is a rare entity characterized by the transmission of symptoms from one patient (the inducer) to another induced). Delusional disorder type mental illness (International Classification Diseases, Tenth Revision, Clinical Modification, diagnosis code F24; it was moved Diagnostic and Statistical Manual Mental Disorders, Fifth Edition, Other...

Shared psychotic disorder, characterized by shared delusion among two or more subjects (termed "Folie à deux," "trois," etc.), is often associated with strong religious beliefs or social isolation, factors creating strong psychological sympathy. Recently, we treated a rare familial case of "Folie à quatre" in central Tokyo without such influences. The proband was a schizophrenia patient and you...

The author presents the first case report of folie a deux from Saharan Africa. The clinical presentation of this disorder in Africa does not significantly differ from those reported elsewhere. But cultural factors like superstitions and witchcraft play an important role in the management of these patients. In the author's view, cooperation with the traditional healer with simultaneous administr...

Folie a deux is characterised by the appearance of delusions in a patient due to a close relationship with another person who already has similar delusions. Folie imposee the commonest clinical form-is more common in women and is frequently seen between two sisters (Gralnick. 1942). We want to share our experience regarding a case of folie a deux in two elderly, widowed sisters, who lived toget...

Induced delusional disorder or folie a deux in a 19 year old girl from India whose 16 years old younger sister had paranoid schizophrenia is described. Transient sharing of delusional beliefs by those living with the patients may be an extension of unsubstantiated beliefs held by the community.

We report a case of infanticide of a 4-month-old infant boy by starvation and dehydration. The parents were both charged with murder. The mother suffered from schizoaffective disorder, and the father was diagnosedwith shared psychotic disorder (folie à deux) by forensic assessment (T.R.). We describe the couple’s history, including a summary of their delusional beliefs, based on police reports,...