Therapeutics: In medicine, the branch that deals specifically with the treatment of disease and the art and science of healing. Exercise, diet, and mental factors are therefore integral to the prevention, as well as the management, of disease processes. More specific measures that are employed to treat specific symptoms include the use of drugs to relieve pain or treat infection, surgery to remove diseased tissue or replace poorly functioning or nonfunctioning organs with fully operating ones, and counseling or psychotherapy to relieve emotional distress.