[Chronophrenia - a new delusion described by Bertalan Petho].

In 1985 Bertalan Petho enriched psychiatric literature by the description of a new delusion. The essence of chronophrenia is the delusion, that the patient has already lived through this life once. The phenomenon is a persis - tant delusion, that differs from the experi-ences of déja vu and déja vecu. The present article introduces the publication of Petho and interprets it in the light of research on time-sense in schizophrenia. The similarity of chrono-phrenia and the idea of Eternal Return by Nietzsche is also discussed.