FOLIE A DEUX By N., Sam M.S. - 20 The most common shared psychotic disorder where 2 intimately related people have the same or similar delusions. French for double insanity. FOLIE A DEUX: "Folie a deux is French for 2 people with a shared disorder." Related Psychology Terms Dissociative Identity Disorder Selecting a Diagnosis LEGAL PSYCHIATRY (Forensic Psychiatry) CANNON, WALTER BRADFORD (1871-1945) Diagnosis and Treatment Planning A Comparison of Maternal and Paternal Filicide MARRIAGE THERAPY SCHIZOPHRENIA (PARANOID TYPE) MANIC-DEPRESSIVE REACTION (GENERAL) ANTISOCIAL REACTION Cite this page: N., Sam M.S., "FOLIE A DEUX," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/folie-a-deux/ (accessed August 11, 2022).