Despite the known association of folie à deux with low intelligence, very few reports of its occurrence in people with documented mental retardation have been published. A case of folie à deux in a 32 year old man with moderate mental retardation is described and the clinical implications discussed. The need for an increased awareness of the existence of mental illness in the mentally handicapped is also emphisized.
References
1.
LasègueC., FalretJ.La folie à deux (translation by R Michaud).Am J Psychiatry1964; 121(4): 1–23.
2.
GralnickA.Folie à deux: the psychosis of association: a review of 103 cases and the entire English literature.Psychiatr Q1942; 16: 230–263.
3.
TukeD.Folie à deux.Br Med J1887: September: 505–506.
4.
SoniS.C., RockleyG.J.Socio-clinical substrates of folie à deux.Br J Psychiatry1974; 125: 230–235.
5.
MeakinC.J., RenvoizeE.B.Folie à deux in Down's syndrome: a case report.Br J Psychiatry1987; 151: 258–260.
6.
EnochM.D., ThrethowanW.H.Folie à deux (et folie à plusieurs). Uncommon psychiatric syndromes.Bristol: Wright and Sons, 1979.
7.
BankierR.G.Role reversal in folie à deux.Can J Psychiatry1988; 33(3): 231–232.
8.
McNeilJ.N., VerwoerdtA., PeakD.Folie à deux in the aged: review and case report of role reversal.J Am Geriatr Soc1972; 20(7): 316–323.
9.
EatonL.F., MenolascinoF.J.Psychiatric disorders in the mentally retarded: types, problems and challenges.Am J Psychiatry1982; 139: 1297–1303.
10.
MenolascinoF.J., LevitasA., GreinerC.The nature and types of mental illness in the mentally retarded.Pharmacol Bull1986; 22(4): 1060–1071.
11.
KirmanB.Mental illness and mental handicap: reflections on diagnostic problems and prevalence. In: JamesF.E., SnaithR.P., eds. Psychiatric illness and mental handicap.London: The Royal College of Psychiatrists,1979.
