Allopathic medicine: The system of medical practice which treats disease by the use of remedies which produce effects different from those produced by the disease under treatment. MDs practice allopathic medicine, which is also called conventional medicine.
The term “allopathy” was coined in 1842 by C.F.S. Hahnemann to designate the usual practice of medicine (allopathy) as opposed to homeopathy, the system of therapy that he founded based on the concept that disease can be treated with remedies (in minute doses) thought capable of producing the same symptoms in healthy people as the disease itself.
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The American Medical Association (AMA) and the National Residency Matching Program use the term to refer to the schools and residency training programs which they govern, e.g. an allopathic medical student. Thus, the term distinguishes these schools and programs from those that receive accreditation by the American Osteopathic Association.