The monograph presents the results of a long-term study of psychoses in various infections (influenza, rheumatism, brucellosis, tuberculosis, malaria, postpartum and pus infection). The issues of their spread in connection with the spread of infectious diseases, as well as their pathomorphosis over the past decades, are highlighted. Clinic, course and long-term outcomes of psychoses at each infection are described, their general and specific features are highlighted.