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Capgras Delusion SyndromeMariana Acevedo & Joshua HalesDescriptionThe person's primary delusion is that a close relative or friend has been replaced by an impostor, an exact double, despite recognition of familiarity in appearance and behavior.

The patient may also see himself as his own double. Persons suffering from Capgras Syndrome typically believe they exist in a world of impersonators.

Syndrome Characterictics1. The person is convinced that one or several persons known by the sufferer have been replaced by a double, an identical looking imposter2. The patient sees true and double persons3. It can be extended to animals and objects4. The person is conscious of the abnormality of these perceptions. There is no hallucination5. The double is usually a key figure for the person at the time of onset of symptoms. If the person is married the key figure could be the husband or the wife accordinglyAssociated features1.Cerebral lesions caused by head injury2.Schizophrenic diseased conditions3.Affects both sexes, but prevalent in womenDifferential diagnosisSimilar disorders

SchizophreniaAlzheimerHungtintonMultiple sclereosisTraumatic brain injurySubstance-induced delusional disordersMood disorders with delusionsDementiaCauseThe Capgras Syndrome and related substitution delusions have an organic etiology (35%).A simple failure of normal recognition processes:Brain damage to the right sideDrug overdoseControversies about the etiology, between organic factors and psychodynamic factors, or a combination of the two.

TreatmentIndividual therapyPersistence to establish a therapeutic empathyCognitive techniques with reality testing and reframingAntipsychotics drugs

Counseling and psychotherapyCognitive-behavioural therapyPersistent gentle discussions about evidence for the beliefReconsider the false belief about the substitution delusions against the available evidence.Thank you!

(An example)BibliographyPsychNet-UK. Capgras (Delusion) Syndromehttp://www.psychnet-uk.com/x_new_site/DSM_IV/capgras_syndrome.html