[Systems-structure analysis of delusional disorders].

Delusion is a complicate psychic disorder which cannot be interpreted in a unique manner. For studying the delusion phenomenology and genesis use was made of a system-and-level approach. Four basic aspects of it are differentiated, that is, the initial level of the psychotic disorders, the cognitive-reflectory mechanisms of the delusion manifestations, the contents of the delusional ideas, and the subsystem of the psychopathological and psychological influences on the delusion contents. Signs characterizing these delusion aspects are listed, and the probability of their manifestation in this or that disease is indicated.