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Related Experiment Videos

Folie à deux in forensic setting

N A Kraya1, C Patrick

  • 1Regional Forensic Psychiatric Service, Health Waikato, Hamilton, New Zealand.

The Australian and New Zealand Journal of Psychiatry
|March 4, 1998
PubMed
Summary

Folie à deux cases involving shared religious delusions pose significant risks, often leading to fatal outcomes in family settings. This highlights challenges in forensic evaluations for individuals with psychotic illnesses.

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Area of Science:

  • Forensic Psychiatry
  • Psychopathology
  • Clinical Psychology

Background:

  • Folie à deux is a rare psychiatric disorder where symptoms are transmitted from one individual to another.
  • Cases in forensic settings are particularly concerning due to the potential for severe harm.

Purpose of the Study:

  • To present a series of folie à deux cases within a forensic context.
  • To analyze psychopathology patterns and legal outcomes.
  • To highlight the risks associated with this disorder.

Main Methods:

  • Case series methodology.
  • Detailed review of five folie à deux cases.
  • Inclusion of medicolegal reports and expert testimony.

Main Results:

  • All five cases involved close family relationships (spouses, mother-daughter, twin brothers).
  • No prior psychiatric or criminal history was noted in any individual.
  • Victims experienced fatal or near-fatal outcomes.
  • Shared religious delusions were a common feature across all cases.

Conclusions:

  • Folie à deux with shared religious delusions presents a high risk, especially within families.
  • Forensic systems face challenges in assessing individuals with psychotic illnesses, particularly under McNaughton rules.
  • These cases underscore the need for careful psychiatric evaluation in legal contexts.

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