Allopathy is a system of medicine that focuses on treating diseases by using substances that produce effects opposite to the symptoms. This approach often involves the use of medications, surgery, or other interventions to alleviate illness. The term is derived from the Greek words "allo," meaning "other," and "pathos," meaning "suffering." Practitioners of allopathy, commonly known as medical doctors or MDs, typically rely on scientific research and clinical trials to guide their treatment methods. This system is widely practiced in many countries and is often contrasted with alternative medicine approaches, such as homeopathy or naturopathy.