Vive La France: Three Delusional Disorders Originally Reported in the French Medical Literature

Delusions as a feature of psychosis have long captured the fascination of both psychiatry and the public at large. The French first described three famous delusions: the Cotard delusion, folie à deux, and Capgras delusion. In this article, we examine a case illustrating each delusion and the hallmark features of each as well as a brief discussion about the current understanding of these disorders.