Medicine is a science and practice in diagnosis, treatment, and disease prevention. The word medicine is derived from the Latin language "medicus", in which a variety of health care operations are practiced, and medicine has evolved since its inception a lot, as modern medicine contains many branches and departments such as biomedical sciences, And medical research, genetics, and medical technology for the purposes of diagnosing and treating disease, and the doctor usually uses medications, surgeries, and psychological treatments in his treatment according to the pathological condition. Clinical practices Clinical practices vary from country to country; Because of regional differences in culture and technology, scientific medicine is considered modern medicine in the Western world, while many developing countries in the African and Asian continents continued to rely on traditional medicine, with limited evidence during practice.The modern practice process depends on the evaluation of patients by doctors in order to diagnose and treat the disease, and to prevent its symptoms and diseases, while relying on an interactive relationship between the doctor and the patient to examine him according to a history and medical record, followed by a medical interview, a physical examination, and then the basic diagnosis using medical devices ( Stethoscope and tongue depressor), and according to the diagnosis, the doctor decides to perform certain tests related to the condition using biopsies if needed, and there is a type of diagnosis, known as the differential, which helps to exclude cases based on the information providedSurgical procedures are one of the ancient medical specialties that rely on various evidences and techniques; This is to help improve the functions of the body, and repair the organ in which a defect occurred, and surgeries are usually performed for the heart, blood vessels, colorectal surgery, brain and nerves, oral and maxillofacial surgery, tumor surgery, bones, ear and throat, plastic surgery, foot care surgery, And surgery for transplantation, and the urinary tract, and the doctor approves before starting any operation to anesthetize the patient; In order not to feel any pain during the operation, and to make it easier for the doctor to perform the operation without any obstructions on the part of the patient.Diagnostic specialties Medical laboratories: Clinical diagnostic services that apply to laboratory techniques for the diagnosis and treatment of patients. These services are supervised by the pathologist, and branch out into other sub-specialties such as blood transfusion medicine, cellular pathology, clinical chemistry, clinical microbiology and clinical immunology. Pathology as a medical specialty: is the branch of medicine that deals with the study of diseases, their morphology, and the physiological changes produced by them. Radiology: It means imaging the human body through X-rays, tomography, ultrasound, and nuclear magnetic resonance tomography. Nuclear medicine: the study of human organ systems by radioactive substances in the body