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Delusion that a familiar person has been replaced by an identical impostor.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