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Syndrome reference sheet
Generated 12 Oct 2026
Psychiatry · Psychiatry / Delusional misidentification syndromes

Capgras syndrome

Also known as: Capgras delusion; Illusion of doubles

Delusion that a familiar person has been replaced by an identical impostor.

Medical specialty
Psychiatry
Subspecialty
Psychiatry / Delusional misidentification syndromes
Sex & age distribution
Male: affected; Female: affected, slight female predominance; Children: rare
Gene(s) involved
None recorded

Etiology & mechanism

Disconnection between facial recognition and emotional familiarity, seen in psychosis and neurodegeneration.

Gene(s) involved (0)

No gene recorded.

Symptoms & signs (5)

anxietybelief that relatives are impostorshallucinationshostility toward the perceived impostorparanoia
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