Definition of Folie à deux

1. Noun. The simultaneous occurrence of symptoms of a mental disorder (as delusions) in two persons who are closely related (as siblings or man and wife).


Definition of Folie à deux

1. Noun. (psychiatry) A rare syndrome in which a symptom of psychosis (particularly a paranoid or delusional belief) is transmitted from one person to another. ¹

¹ Source: wiktionary.com

Medical Definition of Folie à deux

1. Identical or similar mental disorders, such as a paranoid fixation, usually affecting two members of the same family living together. Synonym: shared psychotic disorder. Origin: Fr. Two (05 Mar 2000)

Lexicographical Neighbors of Folie à Deux

foliature
folic
folic acid
folic acid antagonist
folic acid antagonists
folic acid conjugate
folic acid deaminase
folic acid deficiency
folic acid deficiency anaemia
folic acid oxidase
folie
folie a deux
folie du doute
folie du pourquoi
folie gemellaire
folie à deux (current term)
folier
folies
foliferous
foliiferous
folily
folinate
folinic acid
folio
folio post
folioed
folioing
foliolate
foliole
folioles

Literary usage of Folie à deux

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of Nervous and Mental Disease by American Neurological Association, Philadelphia Neurological Society, Chicago Neurological Society, New York Neurological Association, Boston Society of Psychiatry and Neurology (1905)
"This is a report of cases commonly known under the name of folie a deux—in this instance folie a trois. The victims consisted of a father, ..."

2. Journal of Nervous and Mental Disease by Philadelphia Neurological Society, American Neurological Association, Chicago Neurological Society, New York Neurological Association (1903)
"... first, of comprehending the numerous observations published on this subject, and second of being general; folie a deux being only a special effect of ..."

3. The Dublin Journal of Medical Science (1881)
"Folie a deux.—The interesting subject of insanity passed on from one individual to another, as it were by direct personal influence or contagion, ..."

4. Text-book of Psychiatry: A Psychological Study of Insanity for Practitioners by Emanuel Mendel (1907)
"The mental disease which arises in the second individual is called induced insanity (folie a deux, ..."

5. Clinical Lectures on Mental Diseases by Thomas Smith Clouston (1904)
"Folie a, Deux.—There is a very curious condition of brain in some persons ... They are then said to be affected by "communicated" insanity, or folie a deux. ..."

6. Mind and Its Disorders: A Text-book for Students and Practitioners by William Henry Butter Stoddart (1908)
"... folie a deux occurs in two members of the same family, sisters, brothers, father and son, mother and daughter or perhaps husband and wife. ..."

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