[Folie à deux - mental infection or individual psychosis]

Fortschr Neurol Psychiatr. 2008 Mar;76(3):149-54. doi: 10.1055/s-2007-980123. Epub 2007 Sep 26.
[Article in German]


The phenomenon of folie à deux has been a topical issue in psychiatry for more than a century. Mainly, genetic and psychodynamic factors are discussed controversially in terms of their relevance to the etiology of folie à deux. In this paper, effort is taken to reconceive the topic applying the criteria of a differentiated psychopathological classification. Based on the literature and on two own cases, we try to elaborate characteristical psychopathological features of folie à deux patients. We hypothesize that at least a substantial fraction could be classified as "folie simultanée" when Leonhard's criteria of the affect-laden paraphrenia are considered.

Publication types

  • Case Reports
  • English Abstract
  • Review

MeSH terms

  • Adult
  • Female
  • Humans
  • Middle Aged
  • Models, Psychological
  • Shared Paranoid Disorder / classification
  • Shared Paranoid Disorder / psychology*
  • Shared Paranoid Disorder / therapy