Samuel C. F Hahnemann (1755-1843).The German doctor responsible for the founding of homeopathy. According to this form of medical thinking, various medical conditions may be treated by the use of minimal doses of substances which if given at high doses would produce the symptoms of the disease itself. For example, stomatitis (inflammation of the mucosa in the mouth) is treated with very tiny doses of mercury, which is responsible for causing stomatitis at high doses.