[Travel as a stabilizing factor in folie a deux?]

Case report on a folie à deux (double insanity) in a relatively young, married couple who decompensated psychologically subsequent to the failure of different compensation mechanisms after premorbid strange behaviour and jointly developed delusions of ugliness and of injury. The history of the disease pattern of "folie à deux", or double insanity, is described, as well as the present-day definitions, and the case report is set against this background.