Foreign data about the role of influenza virus, measles and SARS-CoV-2 in the development of autoimmune diseases is described. The main characteristics of most frequent autoimmune diseases is given. The authors give characteristics of influenza virus, measles and SARS-CoV-2 virus as infectious agents- triggers of autoimmune central nervous system diseases. Modern possibilities to strenghen a patogenic therapy by Cytoflavin, which has a complex effect aimed at improving metabolic processes in the brain, are presented.