What Is Capgras Syndrome? Capgras syndrome is a psychological condition. It’s also known as “imposter syndrome” or “Capgras delusion.” People who experience this syndrome will have an irrational belief that someone they know or recognize has been replaced by an imposter.

Capgras syndrome, also known as Capgras delusion, is the irrational belief that a familiar person or place has been replaced with an exact duplicate.

Abstract. Fregoli syndrome is the delusional belief that one or more familiar persons, usually persecutors following the patient, repeatedly change their appearance.

Currently, there is no standard treatment for people affected by Capgras syndrome, and more research is needed to find the most effective way it can be treated. In some cases, treating the underlying condition can reduce or cure someone’s symptoms.

Most of what we know comes from doctors’ reports of individual patients. (These are often called case reports.) Some research shows that it’s more common among people with dementia: Up to 16% of those with Lewy body dementia or Alzheimer’s also have Capgras syndrome.

“Capgras is a misidentification syndrome characterized by the transient, recurrent or permanent belief that someone known to a patient has been replaced by an impostor with a strong physical resemblance,” explains Erin Shvetzoff Hennessey, MA, NHA, CPG, chief executive officer of Health Dimensions Group.

Hence there are adherents of organic as well as dynamic factors in the genesis of this disorder. The authors report the occurrence of the Capgras Syndrome in a brother and sister and elaborate on the interplay of both genetic and dynamic factors in the etiology.

Conclusions: The results of this study indicate that Capgras syndrome is not a rare syndrome, and commonly occurs during the course of either functional or organic psychotic illness. Age seems to be an important predicting factor for the etiology of psychosis underlying Capgras syndrome.

Abstract. Reduplicative paramnesia for places (i.e., the delusional belief that a place has been duplicated or exists in two different locations) is a rare disorder observed in neurological patients.

2 Reduplicative paramnesia most often occurs in patients with neurodegenerative disorders, stroke, head trauma, or psychiatric disorders. 3-5 We describe four patients with RP and try to explain how RP helps us analyze the underlying causes of this delusional syndrome, related to implicit and explicit memory circuits.

Fregoli delusion is the mistaken belief that some person currently present in the deluded person’s environment (typically a stranger) is a familiar person 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. P. Courbon and G. Fail first reported the condition in a 1927 paper (Syndrome d’illusion de Frégoli et schizophrénie).