folie à deuxfo·lie à deux
Psychiatry a condition in which two closely associated people who are mentally ill share the same delusional beliefs
Origin of folie à deuxFr, literally , double insanity
folie a deux
A condition in which two individuals who share a close relationship experience the same delusions or hallucinations as the result of a mental disorder such as schizophrenia affecting one or both of them. Also called shared psychotic disorder .
Origin of folie a deuxFrench folie madness à between deux two
(plural folies à deux)
French folie à deux, "madness of two (people)".