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Multiple personality disorder in Japan
Abstract:
The aim of this study was to determine whether the features of multiple personality disorder (MPD) in Japan are similar to those in North America, although a wide disparity exists in the prevalence of MPD between the two areas. In order to describe the features of MPD in Japan, we obtained clinical data from MPD case reports, including two of our own cases, published in Japanese academic journals and compared it with the data from other countries. The cases in Japan differed significantly from those in North America in the mean number of personalities and prevalence of sexual and/or physical abuse.
Insights
Features of multiple personality disorder (MPD) in Japan differ from North America, particularly in the number of personalities and reported abuse prevalence. This study compares Japanese MPD cases to international data.
Area of Science:
- Psychiatry
- Cross-cultural psychology
Background:
- Multiple Personality Disorder (MPD) prevalence varies globally.
- Understanding regional MPD features is crucial for accurate diagnosis.
Purpose of the Study:
- To compare the clinical features of MPD in Japan with those in North America.
- To investigate potential differences in MPD presentation across cultures.
Main Methods:
- Clinical data from published Japanese MPD case reports were analyzed.
- Two additional Japanese cases were included.
- Japanese MPD data were compared with international case data.
Main Results:
- Japanese MPD cases showed a significantly lower mean number of distinct personalities compared to North American cases.
- The prevalence of reported sexual and/or physical abuse differed between Japanese and North American MPD cases.
Conclusions:
- MPD presents with distinct characteristics in Japan compared to North America.
- Cultural factors may influence the manifestation and reporting of MPD symptoms, including abuse history.