The first clinical description of schizohrenia appeared about: 1800. The name had not been invented but the psychosis was clearly described. This does not mean that ii had not existed before then (the Bible contains reference to psychotic behaviour that could be labeled schizophrenic) but it does mean that it was very rare and that it became increasingly common over the last century of industrialization. There is evidence that in peoples not exposed to modern industrialization the incidence of schizohrenia was much less and the severity of the condition is less in underdeveloped countries. A recent survey of several countries showed (1) the incidence was the same (2) but that the severity was much greater in countries such as Canada and the United Slates compared to Bangladesh.