At the annual meeting of the Deutschen Verein für Psychiatrie in Berlin on the 24th and 25th of April, 1908 Bleuler introduced the term schizophrenia, by which he denoted a group of psychotic reactions rather than one formal disease.

Bleuler introduced the concept of schizophrenia. He showed that Kraepelin’s “dementia praecox” (No. 4952) should include all the schizophrenic disorders. Translated into English by Joseph Zinkin as Dementia praecox or the group of schizophrenias. New York: International Universities Press, 1950.