[Clinical features of stages in the development of depersonalization in adolescence and young adulthood].

Using clinico-psychopathological methods, the author examined 44 adolescents and youths suffering from slowly progressive schizophrenia and the syndrome of depersonalization. Four stages of the formation of depersonalization were identified: vital, allopsychic, somatopsychis and autopsychic. The correlations of the leading depersonalizational and related affective and neurosis-like disorders were considered at each stage. It was shown that each stage was predominantly characterized by disturbances of the same level of the development of self-consciousness and psyche and that the clinical picture of the syndromokinesis tended to parallel the time-course from disturbances of ontogenetic early forms of self-consciousness to more advanced forms. The author outlines possible clinico--ontogenetic correlations of stages of depersonalization and levels of self-consciousness and psyche with regard to the most prevalent taxonomies of depersonalization.