Fregoli delusion
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The Fregoli delusion or Fregoli syndrome is a rare disorder in which a person holds a delusional belief that different people are in fact a single person who changes appearance or is in disguise. The syndrome may be related to a brain lesion and is often of a paranoid nature with the delusional person believing that he or she is being persecuted by the person he or she believes to be in disguise.
The condition is named after the Italian actor Leopoldo Fregoli who was renowned for his ability to make quick changes of appearance during his stage act.
It was first reported in a paper by P. Courbon and G. Fail in 1927 (Syndrome d’illusion de Frégoli et schizophrénie). They discussed the case study of a 27-year-old woman who believed she was being persecuted by two actors whom she often went to see at the theatre. She believed that these people "pursued her closely, taking the form of people she knows or meets".
The Fregoli delusion is classed both as a monothematic delusion, since it only encompasses one delusional topic, and as a delusional misidentification syndrome, a class of delusional beliefs that involves the misidentification of people, places or objects. Like Capgras delusion, it is thought to be related to a breakdown in normal face perception.
See also
References
- Ellis, H. D.; Whitley, J.; & Luaute, J. P. (1994). Delusional misidentification. The three original papers on the Capgras, Fregoli and intermetamorphosis delusions. (Classic Text No. 17). History of Psychiatry 5 (17 pt. 1) 117–146.
- Mojtabai, R. (1994). Fregoli syndrome. Australia and New Zealand Journal of Psychiatry 28 (3) 458–462.
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
