What is "folie a deux"

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

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

"Folie à Deux" is the nineteenth episode of the fifth season of American science fiction television series The X-Files. It was written by Vince Gilligan and directed by Kim Manners. The episode originally aired on May 10, 1998 in the United States on the Fox network. The episode is a " Monster-of-the-Week" story, a stand-alone plot which is unconnected to the series' wider mythology, or fictional history. The episode earned a Nielsen household rating of 11.0, being watched by 17.63 million viewers upon its initial broadcast. It received largely positive reviews from critics.

The show centers on FBI special agents Fox Mulder ( David Duchovny) and Dana Scully ( Gillian Anderson) who work on cases linked to the paranormal, called X-Files. In this episode, Mulder encounters a delusional man, Gary Lambert ( Brian Markinson), who believes his boss, Greg Pincus (John Apicella), may be a monster—and decides to take an entire office building, including Mulder, hostage to prove it. Lambert is eventually killed, but somehow, Mulder inherits his ability to see Pincus as a monster. After Mulder claims that Pincus is a monster, he is locked in a psychiatric hospital, only to be saved by Scully: the only person who believes him.

The episode's antagonistic bug creature was created by means of a prosthetic suit that was worn by a stuntwoman. The suit was highly ridiculed behind the scenes. To fix the perceived issues with the monster, the production team gave the film to visual effects editor Laurie Kallsen-George, who digitally altered the footage until it was deemed suitable. The episode's title is a reference to Folie à deux, a form of insanity shared by two people. It usually begins with one person who conceives of a delusional belief and then spreads it to another; thus, those two share the same delusion.

Folie à Deux is a California winery in the Napa Valley that is part of the Trinchero Family Estates. One of its wines, the red blend Ménage à Trois, is the best-selling red wine in the United States and was named the "Wine Brand of the Year" for 2009.

Folie à Deux (; French for "A Madness Shared by Two") is the fourth studio album by American rock band Fall Out Boy. Produced by Neal Avron, the album was recorded from July to September 2008 at The Pass Studios and The Casita in Hollywood, California. As the follow-up to the band's commercially successful 2007 effort Infinity on High, it was released by Island Records on December 10, 2008, after the original November 4 release was postponed to avoid conflicts with the United States presidential election. Like the band's two previous releases, Folie à Deux was musically composed by lead vocalist and guitarist Patrick Stump, with lyrics penned by bassist Pete Wentz. In regard to the writing process, the band considered Folie à Deux to be the band's most collaborative record at the time.

The album was recorded in relative secrecy compared to the press that its predecessor possessed. The recording sessions inspired lyricism that related to decaying relationships, moral dilemmas, and societal shortcomings, many with a political edge. It is the first Fall Out Boy album with lyrics that are less autobiographical. The album's style moved away from early emo power chords and toward a wider variation in genre. Fall Out Boy recruited several guest artists for Folie à Deux, as well as employing instruments and recording techniques previously unfamiliar to the group. To promote the album, the band launched a viral campaign based around a Big Brother-type organization named " Citizens For Our Betterment" (CFOB) and embarked on an extensive tour schedule.

Folie à Deux was released in the United States on December 16, 2008, and received favorable reviews from most music critics, although fan opinions were mixed. Positive reviews focused on the creativity and various styles touched on, while the more negative reviews expressed concern that the record was overly indulgent. The album debuted at number eight on the US Billboard 200 chart with 149,000 first week sales but was less commercially successful than Infinity on High. As of February 2013 Folie à Deux has sold 449,000 copies in the US. It was certified gold by the Recording Industry Association of America (RIAA) after 500,000 copies were shipped. The album spawned four singles. " I Don't Care", the first single, reached number 21 on the Billboard Hot 100 and was certified platinum. Folie à Deux was Fall Out Boy's last studio album released before the band's 2009–13 hiatus.

A folie à deux (French for "a madness shared by two") is a rare psychiatric syndrome shared by two people.

Folie à deux may also refer to:

• Folie à Deux (album), the fourth studio album by American rock band Fall Out Boy.
• Folie à Deux (winery), a Napa Valley, California winery.
• "Folie a Deux" (Law & Order: Criminal Intent), a Law & Order: Criminal Intent season 8 episode.
• "Folie à Deux" (The X-Files), a 1998 episode of The X-Files.

Folie à deux (; ; French for "madness of two"), or shared psychosis, is a psychiatric syndrome in which symptoms of a delusional belief and hallucinations 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. This disorder is not in the current DSM (DSM-V). 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.