Did you know that…..
the “Folie à deux” is a term introduced by Lasèque and Falret in 1877 to describe a delusions shared by to persons ?
Baillager was the first to reported a case in 1860.
A common delusions involve two persons ( if three is called “folie à trois“), and the majority of delusions are persecutory.
One of the two persons is a psychotic, and he is the dominant. This persons provokes a delusional development in a relatively dependent, and submissive one.
(Edited by María Moya Guirao, M.D.)