Capgras' syndrome

   Also known as Capgras syndrome, Capgras syndrome for persons, Capgras delusion, illusion des sosies, illusion of doubles, and illusion of false recognition. The eponym Capgras' syndrome refers to the French psychiatrist Jean Marie Joseph Capgras (1873-1950), who has been credited with being the first to describe the concomitant phenomenon in collaboration with his intern Jean Reboul-Lachaux in 1923. It was their French colleague Joseph Levy-Valensi who in 1929 proposed the eponymCapgras' syndrome. Capgras and Reboul themselves referred to this syndrome by the French term illusion des sosies (illusion of doubles). Today the term Capgras' syndrome is used to denote a condition characterized by the inability to identify a familiar person, even though one does recognize that person's facial and bodily characteristics. As a result, individuals with Capgras' syndrome tend to believe that the person in question has been replaced by a double (hence the name illusion of doubles). The syndrome is generally regarded as a type of hypo-identification, and classified as one of the *misidentification syndromes, or, more specifically, as one of the delusional reduplication syndromes. It has also been classified as an agnosia, and as a variant of reduplicative param-nesia (the latter condition being characterized by the affected person's conviction that a familiar place, or object, or person has been duplicated). Because of its association with various psychiatric and neurological disorders, doubts were long expressed about whether Capgras' syndrome deserves the nosological status of a syndrome. As to its pathophysiology, it has been suggested that Capgras' syndrome is associated with bifrontal cerebral cortical atrophy, and with the presence of one or more right parieto-occipital lesions. However, the right fusiform gyrus - which plays an important role in various stages of face recognition - has emerged as a possible candidate for the syndrome's primary neurophysio-logical correlate. A variant of the Capgras-type misidentification syndrome characterized by the conviction that one's house, or the building in which one currently resides (such as a hospital) has been replaced by a duplicate building, is known under the name Capgras for environment. The term Capgras for arm was introduced by the American neurologist and psychiatrist Todd Feinberg and his colleague David M. Roane to denotea variantof*asomatognosia characterized by misidentification of a part of one's body (i.e. an arm).
   Capgras, J., Reboul-Lachaux, J. (1923). L'illusion des "sosies" dans un delire systematisé. Bulletin de la Société de Médecine Mentale, 11, 6-16.
   Ellis, H.D., Whitley, J., Luauté, J.-P. (1994). Delusional misidentification. The three original papers on the Capgras, Frégoli and intermeta-morphosis delusions. (Classic Text No. 17). History of Psychiatry, 5, 117-146.
   Feinberg, T.E., Deluca, J., Giacino, J.T., Roane, D.M., Solms, M. (2005). Right-hemisphere pathology and the self: Delusional misidentification and reduplication. In: The lost self. Pathologies ofthe brain and identity. Edited by Feinberg, T.E., Keenan, J.P. Oxford: Oxford University Press.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • Capgras syndrome — Cap·gras syndrome (kahp grahґ) [Jean Marie Joseph Capgras, French psychiatrist, 1873–1950] see under syndrome …   Medical dictionary

  • Capgras' syndrome — (illusion of doubles) the delusion that a person closely involved with the patient has been replaced by an identical looking impostor. It is often, but not necessarily, a form of paranoid schizophrenia. J. M. J. Capgras (1873 1950), French… …   Medical dictionary

  • Capgras' syndrome — illusion of doubles the delusion that a person closely involved with the patient has been replaced by an identical looking impostor. It is often, but not necessarily, a symptom of paranoid schizophrenia. [M. J. Capgras (1873–1950), French… …   The new mediacal dictionary

  • Capgras syndrome — a form of delusional misidentification in which the patient believes that other persons in the environment are not their real selves but doubles. Cf. Frйgoli phenomenon …   Medical dictionary

  • Capgras syndrome for persons —    see Capgras syndrome …   Dictionary of Hallucinations

  • Capgras syndrome for the mirror image —    see mirror sign …   Dictionary of Hallucinations

  • Capgras delusion — Infobox Disease Name = PAGENAME Caption = DiseasesDB = 32606 ICD10 = ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D002194 The Capgras delusion (or Capgras syndrome) is a rare disorder in which a person holds a… …   Wikipedia

  • Syndrome of subjective doubles — The syndrome of subjective doubles is a rare delusional misidentification syndrome in which a person suffers from the delusion that he or she has a double or doppelganger with the same appearance, but usually with different character traits and… …   Wikipedia

  • Capgras-Syndrom — Klassifikation nach ICD 10 F22 Wahnsyndrom mit Personenverkennung im Sinne der Doppelgänger Illusion …   Deutsch Wikipedia

  • Capgras delusion — noun A delusion in which the sufferer believes that a friend, spouse or family member has been replaced by an identical looking impostor. Syn: Capgras syndrome …   Wiktionary

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