Abstract. In connection with the clear changes in the age structure of the general population in relation to large age groups and, perhaps, with an increase in the proportion of mentally ill people in old and old age, the study of the geriatric aspects of psychiatry is becoming an increasingly important and necessary task. These global trends make it relevant to study the psychoses of schizophrenia, which debuted at the atypical (late) age due to difficulties in diagnosis, a differentiated approach to treatment and rehabilitation.