According to the traditional concept of the present day immunology, neither autoimmune diseases nor allergic illnesses are frequently cured completely. Nevertheless, a lucky accident led the writer to urge a totally unique idea that eliminations of the causes of those diseases are possible. In other words, combinations of pathogenic antibodies with accountable cells, namely, cytolytic T lymphocytes in cases of autoimmune sicknesses and mast cells in cases of allergic diseases, are frequently decomposed through changing the pathogenic antibodies with non-unique antibodies. The thanks to make the above referred to replacements appear is repeated intradermal injections with non-unique antigen preparations. Equilibrium state amongst antibody molecules inside the area of their receptors turned into proposed and hooked up. An evidence of abovenoted equilibrium is that each antibody molecule continues attaching to and detaching from its receptors. Another clarification of the equal is that every receptor keeps changing antibodies. After a sufficient quantity of repetitions of the above-stated injection, an outsized variety of non-unique antibodies are accumulated. Then, certainly no pathogenic antibody remains connected to the receptors. Namely, disease-causes get eliminated.