
Contents
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Vignette Vignette
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Historical and Cultural Context Historical and Cultural Context
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Role in Current Diagnostic Systems Role in Current Diagnostic Systems
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Symptomatology Symptomatology
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Prevalence Rate and Associated Features Prevalence Rate and Associated Features
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Theories of Etiology Theories of Etiology
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Neurology Neurology
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Emotional Conflicts and Psychodynamic Theories Emotional Conflicts and Psychodynamic Theories
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Regression Regression
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Depersonalization Depersonalization
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Loss of Ego Boundaries Loss of Ego Boundaries
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Deficits in Mental Representations Deficits in Mental Representations
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Prosopagnosia Prosopagnosia
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The Relationships Between Delusional Misidentification Syndromes and Schizophrenia The Relationships Between Delusional Misidentification Syndromes and Schizophrenia
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Assessment Options Assessment Options
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Differential Diagnosis Differential Diagnosis
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Treatment Options Treatment Options
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Recommendations for Future Work Recommendations for Future Work
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References References
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5 Capgras and Other Misidentification Syndromes
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Published:November 2016
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Abstract
Capgras is the delusional belief that people in the sufferer’s life are not who they seem to be, but are identical duplicates who have been substituted for the originals. The copy looks just like the original, although the patient may sometimes notice minor and imaginary differences between the original and the copy, differences that the patient cites as confirmatory evidence that the person is indeed an impostor. Although Capgras was initially thought to occur only during psychotic episodes, it has now been recognized to occur in patients suffering from certain brain conditions as well. Capgras is one of several misidentification syndromes. Other misidentification syndromes, such as the Fregoli delusion and delusion of intermetamorphosis, also are discussed.
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