Skip to main content Accessibility help

Folie à Quatre

  • A. C. P. Sims (a1), P. H. Salmons (a2) and Philippa Humphreys (a3)


A case of folie à quatre is described affecting a proband and his wife, sister and brother. The three family members retained their symptoms of paranoid schizophrenia. The wife was not mentally ill and her delusions disappeared in time (folie imposée). Coincidentally, there were several cases of Huntington's chorea amongst her relatives. Different categories of folie à deux are demonstrated in the various family members and relationships.



Hide All
Dewhurst, K. & Todd, J. (1956) The psychosis of association—folie à deux. Journal of Nervous and Mental Diseases, 124, 451–9.
Goldney, R. D. (1975) Socio-clinical substrates of folie à deux. British Journal of Psychiatry, 126, 203. Letter.
Gralnick, A. (1942) Folie à deux: the psychosis of association: a review of 103 cases and the entire English literature. Psychiatric Quarterly, 16, 230–63.
Kamal, A. (1965) Folie à cinq: a clinical study. British Journal of Psychiatry, 111, 583–6.
Lasègue, C. & Falret, J. (1877) La folie à deux (ou folie communiquée). Annales médico-psychologiques, 18, 321. Translated Michand, R. (1964) Supplement to American Journal of Psychiatry, 121, 4.
Postle, B. (1940) Folie à deux. Archives of Neurology & Psychiatry, 43, 372–80.
Ropschitz, D. H. (1957) Folie à deux: a case of folie imposée à quatre and à trois. Journal of Mental Science, 103, 589–96.
Schneider, K. (1959) Clinical Psychopathology. English translation from 5th edition (Hamilton, M. W.). New York and London: Grune & Stratton.
Soni, S. C. & Rockley, G. J. 1974) Socio-clinical substrates of folic à deux. British Journal of Psychiatry, 125, 230–5.
Tseng, W. S. (1969) A paranoid family in Taiwan: a dynamic study of folic à famille. Archives of General Psychiatry, 21, 5563.

Folie à Quatre

  • A. C. P. Sims (a1), P. H. Salmons (a2) and Philippa Humphreys (a3)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.

Folie à Quatre

  • A. C. P. Sims (a1), P. H. Salmons (a2) and Philippa Humphreys (a3)
Submit a response


No eLetters have been published for this article.


Reply to: Submit a response

Your details

Conflicting interests

Do you have any conflicting interests? *