*isopathy*

n. [ Iso- + Gr. &unr_; suffering. ] (Med.) (a) The system which undertakes to cure a disease by means of the virus of the same disease. (b) The theory of curing a diseased organ by eating the analogous organ of a healthy animal. Mayne. (c) The doctrine that the power of therapeutics is equal to that of the causes of disease. [ 1913 Webster ]