shared paranoid disorder

• 共有妄想性障害

WordNet

1. use jointly or in common
2. assets belonging to or due to or contributed by an individual person or group; "he wanted his share in cash" (同)portion, part, percentage
3. any of the equal portions into which the capital stock of a corporation is divided and ownership of which is evidenced by a stock certificate; "he bought 100 shares of IBM at the market price"
4. give out as ones portion or share (同)divvy up, portion out, apportion, deal
5. communicate; "Id like to share this idea with you"
6. have in common; "Our children share a love of music"; "The two countries share a long border"
7. bring disorder to (同)disarray
8. a physical condition in which there is a disturbance of normal functioning; "the doctor prescribed some medicine for the disorder"; "everyone gets stomach upsets from time to time" (同)upset
9. a disturbance of the peace or of public order
10. suffering from paranoia
11. a person afflicted with paranoia (同)paranoiac
12. have in common; held or experienced in common; "two shared valence electrons forming a bond between adjacent nuclei"; "a shared interest in philately"
13. not arranged in order (同)unordered

PrepTutorEJDIC

1. 〈U〉《時にa~》『分け前』,取り分 / 〈U〉《時にa ~》(費用・仕事などの)『分担』,割り当て;(割り当てられた)役割 / 〈C〉『株』,株式,株券 / 〈U〉市場占有率(market share) / …‘を'『共にする』,共に使う;…‘を'分け合う / (…の)『分配にあずかる』,分担をする;(…を)共にする《+『in』+『名』》
2. =plowshare
3. 〈U〉『無秩序』,混乱,乱雑(confusion) / 《しばしば複数形で》(社会的・政治的な)粉争,騒動 / 〈C〉(肉体的・精神的な)不調,異常,障害 / …‘の'秩序を乱す / 〈心身〉‘に'異常を起こさせる
4. 偏執病患者の,偏執病患者のような / 偏執病患者

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/07/29 18:39:23」(JST)

wiki en

[Wiki en表示]

For other uses, see Folie à deux (disambiguation).

Induced delusional disorder
Classification and external resources
ICD-10	F24
ICD-9	297.3
DiseasesDB	34350
eMedicine	med/3352
MeSH	D012753

Folie à deux (/fɒˈli ə ˈduː/; French pronunciation: ​[fɔli a dø]; French for "a madness shared by two"), or shared psychosis, is a psychiatric syndrome in which symptoms of a delusional belief are transmitted from one individual to another. The same syndrome shared by more than two people may be called folie à trois, folie à quatre, folie en famille or even folie à plusieurs ("madness of many"). Recent psychiatric classifications refer to the syndrome as shared psychotic disorder (DSM-IV) (297.3) and induced delusional disorder (F.24) in the ICD-10, although the research literature largely uses the original name. The disorder was first conceptualized in 19th-century French psychiatry by Charles Lasègue and Jean-Pierre Falret and so also known as Lasègue-Falret Syndrome.

Presentation

This syndrome is most commonly diagnosed when the two or more individuals concerned live in proximity and may be socially or physically isolated and have little interaction with other people.

Various sub-classifications of folie à deux have been proposed to describe how the delusional belief comes to be held by more than one person.

• Folie imposée is where a dominant person (known as the 'primary', 'inducer' or 'principal') initially forms a delusional belief during a psychotic episode and imposes it on another person or persons (known as the 'secondary', 'acceptor' or 'associate') with the assumption that the secondary person might not have become deluded if left to his or her own devices. If the parties are admitted to hospital separately, then the delusions in the person with the induced beliefs usually resolve without the need of medication.
• Folie simultanée describes either the situation where two people considered to suffer independently from psychosis influence the content of each other's delusions so they become identical or strikingly similar, or one in which two people "morbidly predisposed" to delusional psychosis mutually trigger symptoms in each other.

Folie à deux and its more populous cousins are in many ways a psychiatric curiosity. The current Diagnostic and Statistical Manual of Mental Disorders states that a person cannot be diagnosed as being delusional if the belief in question is one "ordinarily accepted by other members of the person's culture or subculture" (see entry for delusion). It is not clear at what point a belief considered to be delusional escapes from the folie à... diagnostic category and becomes legitimate because of the number of people holding it. When a large number of people may come to believe obviously false and potentially distressing things based purely on hearsay, these beliefs are not considered to be clinical delusions by the psychiatric profession and are labelled instead as mass hysteria.

Related phenomena

Reports have stated that a similar phenomenon to folie à deux had been induced by the military incapacitating agent BZ in the late 60s, and most recently again by anthropologists in the South American rainforest consuming the hallucinogen ayahuasca. (Ralph Metzner, 1999).

Individual cases

In the case of twin sisters Ursula and Sabina Eriksson, Ursula ran into the path of an oncoming articulated lorry, sustaining severe injuries. Sabina then immediately duplicated her twin's actions by stepping into the path of an oncoming car; she survived the impact. It was later claimed that Sabina Eriksson was a 'secondary' sufferer of folie à deux, influenced by the presence or perceived presence of her twin sister, Ursula – the 'primary'. Sabina later told an officer at the police station, "We say in Sweden that an accident rarely comes alone. Usually at least one more follows – maybe two." However, upon her release from hospital, Sabina behaved erratically before stabbing a man to death.

Another case involved Margaret and her husband Michael, both aged 34 years, who were discovered to be suffering from folie à deux when they were both found to be sharing similar persecutory delusions. They believed that certain persons were entering their house, spreading dust and fluff and "wearing down their shoes". Both had, in addition, other symptoms supporting a diagnosis of emotional contagion, which could be made independently in either case.

Film and literature

William Friedkin's 2006 film Bug is about a woman who enters into a relationship with a man and begins to share his delusion that the government has infected them with microscopic bugs.

In Jean Carlos Fresnadillo's 2012 film, Intruders, Clive Owen's character is diagnosed with Folie à deux, because he has an extraordinarily close relationship with his daughter, and he and his daughter are the only two who see and interact with the titular intruder, "Hollowface."

The 2011 independent film, Apart depicts two lovers affected and diagnosed with induced delusional disorder, trying to uncover a mysterious and tragic past they share. In a 2011 interview, director Aaron Rottinghaus stated the film is based on research from actual case studies.

In the X-Files episode entitled "Folie à Deux" shared psychosis is brought up by Scully as a possible explanation for the sudden conviction of Mulder, that an apparently mentally ill man had correctly identified his superior as a monster hiding in human shape.

The Simpsons episode "Lisa the Drama Queen" introduces a character called Juliet Hobbes, who retreats into a fantasy world of her own creation. After an amount of time spent in her company, Lisa and eventually Kearney experience Folie imposée which alters their perceptions of reality.

The Suite Life of Zack & Cody episode "The Suite Smell of Excess" involved the central characters returning from a parallel world. Their mother claimed that their experience was a result of them having the same dream, referring to it as Folie à deux.

Fall Out Boy released an album called Folie á Deux.

Perfect Blue, a 1997 Japanese animated psychological thriller film directed by Satoshi Kon involves folie à deux as a major theme and plot line.

In an episode of CSI Miami, a husband and wife kidnap and murder girls. It is described as folie à deux where the wife is the superior person influencing the husband to kill them.

See also

• Codependency
• Delusion
• Delusional disorder
• Emotional contagion
• Hysterical contagion
• Mass hysteria
• Religion

References

Further reading

• Halgin, R. & Whitbourne, S. (2002) Abnormal Psychology: Clinical Perspectives on Psychological Disorders. McGraw-Hill. ISBN 0072817216
• Enoch, D. & Ball, H. (2001) Folie à deux (et Folie à plusieurs). In Enoch, D. & Ball, H. Uncommon psychiatric syndromes (Fourth edition). London: Arnold. ISBN 0340763884
• Wehmeier PM, Barth N, Remschmidt H (2003). "Induced delusional disorder. a review of the concept and an unusual case of folie à famille". Psychopathology 36 (1): 37–45. doi:10.1159/000069657. PMID 12679591. 
• Hatfield, Elaine, Caccioppo, John T., & Rapson, Richard L. (1994). Emotional contagion (Studies in Emotional and Social Interaction). Cambridge, UK: Cambridge University Press. ISBN 0-521-44948-0. 
• Metzner, Ralph, editor. Ayahuasca: Human Consciousness and the Spirits of Nature. New York, NY: Thunder's Mouth Press. ISBN 1-56025-160-3. 

UpToDate Contents

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English Journal

• Faith, Folie à Famille, and Mummification: A Brief Review of the Literature and a Rare Case Report.

• Catanesi R, Punzi G, Rodriguez WC 3rd, Solarino B, Di Vella G.SourceSection of Criminology and Forensic Psychiatry, University of Bari "Aldo Moro", 70124 Bari, Italy.
• Journal of forensic sciences.J Forensic Sci.2013 Sep 10. doi: 10.1111/1556-4029.12264. [Epub ahead of print]
• Folie à deux is a rare clinical syndrome characterized by the transference of delusional ideas from one person to one or more other people in close association with the primary affected patient. Mummification indicates the preservation of the corpse of a person for a variable period of time. A brie
• PMID 24020455

• Folie à deux: a case report.

• Teixeira J, Mota T, Fernandes JC.SourceCentro Hospitalar Psiquiátrico de Lisboa, Lisboa, Portugal. jteixeira2008@gmail.com
• Clinical schizophrenia & related psychoses.Clin Schizophr Relat Psychoses.2013 Summer;7(2):93-6. doi: 10.3371/CSRP.TEMU.120912.
• Folie à deux is a relatively rare mental disorder first described in France in 1877 by Lasègue and Falret. However, folie à deux is still a matter of study and debate today as it remains a challenge for psychiatrists. The aim of our work is to report a clinical case of folie à deux, subtype A of
• PMID 23841956

• A social/emotional theory of 'mental illness'.

• Scheff T.SourceDepartment of Sociology, University of California at Santa Barbara, Santa Barbara, CA 93106, USA. scheftj@cox.net
• The International journal of social psychiatry.Int J Soc Psychiatry.2013 Feb;59(1):87-92. doi: 10.1177/0020764012445004. Epub 2012 Jun 21.
• One reason that theories of mental illness have made little progress may be their focus on individuals, omitting the social/relational and emotional world. Adding these components will be difficult, however: in modern societies they have become virtually invisible, particularly the emotion of shame.
• PMID 22723517

Japanese Journal

• 研究と報告 都市近郊新興住宅地で発症したfolie a quatreの1家族例

• 森山 成〔アキラ〕
• 精神医学 42(9), 929-938, 2000-09
• NAID 40002059098

Related Links

• Shared Psychotic Disorder

3 Feb 2011 ... Shared psychotic disorder, or folie à deux, is a rare delusional disorder shared by 2 or, occasionally, more people ... Delalle et al presented a case of folie à deux in which paranoid delusions were shared by a mother and her ...

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★リンクテーブル★

リンク元	「共有妄想性障害」
関連記事	「disorder」「share」「paranoid disorder」「paranoid」

「共有妄想性障害」

　　[★]

英

shared paranoid disorder

「disorder」

　　[★]

• 障害：個人的苦痛や機能の障害があるので「疾病」とは言えるものの、その背景にある臓器障害がもう一つはっきりしない場合に用いられる。(PSY.9)

• n.

• an untidy state; a lack of order or organization (⇔order)
• violent behaviour of large groups of people
• an illness that cause a part of the body to stop functioning correctly

• 注意

disease <> illness <> disorder

• vt.

• 乱す、乱雑にする。(人)の(心身の)調子を狂わせる。

• vi.

　 　 　 　

「share」

　　[★]

• v.

• 共有する、分け合う

• n.

• シェア、占有率

関

occupancy

　 　 　 　 　 　 　 　

「paranoid disorder」

　　[★]

• 妄想性障害

関

paranoia、paranoid psychosis

「paranoid」

　　[★]

• adj.

• 偏執傾向、妄想性の