[Variants in the course of circular schizophrenia (an epidemiologic study)].

The authors report of the clinico-statistical characteristics in the development of circular schizophrenia in 645 patients. An analysis of the course of the disease was convened in respect to the correlation of the affective disorders, the clinical structure of the attacks and remission, their duration, the amount of attacks in the past, sex and age. It was demonstrated that all of these parameters are closely connected with the type of the manifest attack. This circumstance may be used for the prognosis of the disease and for clarifying the problem of the typology of circular schizophrenia.