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Medical reviews

This is the latest medical reviews revision, reviewed on 22 February 2019.

This article is about the science of healing. Medicine is the science and practice of establishing the diagnosis, prognosis, treatment, and prevention of disease. Prescientific forms of medicine are now known as traditional medicine and folk medicine. They remain commonly used with or instead of scientific medicine and are thus called alternative medicine.

Medical availability and clinical practice varies across the world due to regional differences in culture and technology. In modern clinical practice, physicians personally assess patients in order to diagnose, prognose, treat, and prevent disease using clinical judgment. They are in the patient’s own words and are recorded along with the duration of each one. Also called ‘chief concern’ or ‘presenting complaint’. Medical history comprises HPI and PMH. Current activity: occupation, hobbies, what the patient actually does. A family tree is sometimes used.

The physical examination is the examination of the patient for medical signs of disease, which are objective and observable, in contrast to symptoms which are volunteered by the patient and not necessarily objectively observable. It is to likely focus on areas of interest highlighted in the medical history and may not include everything listed above. The treatment plan may include ordering additional medical laboratory tests and medical imaging studies, starting therapy, referral to a specialist, or watchful observation. On subsequent visits, the process may be repeated in an abbreviated manner to obtain any new history, symptoms, physical findings, and lab or imaging results or specialist consultations. Contemporary medicine is in general conducted within health care systems. Legal, credentialing and financing frameworks are established by individual governments, augmented on occasion by international organizations, such as churches.

The characteristics of any given health care system have significant impact on the way medical care is provided. From ancient times, Christian emphasis on practical charity gave rise to the development of systematic nursing and hospitals and the Catholic Church today remains the largest non-government provider of medical services in the world. Most tribal societies provide no guarantee of healthcare for the population as a whole. Transparency of information is another factor defining a delivery system.

While the US medical system has come under fire for lack of openness, new legislation reviews encourage greater openness. Provision of medical care is classified into primary, secondary, and tertiary care categories. Primary care medical services are provided by physicians, physician assistants, nurse practitioners, or other health professionals who have first contact with a patient seeking medical treatment or care. Secondary care medical services are provided by medical specialists in their offices or clinics or at local community hospitals for a patient referred by a primary care provider who first diagnosed or treated the patient. Referrals are made for those patients who required the expertise or procedures performed by specialists.

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Tertiary care medical services are provided by specialist hospitals or regional centers equipped with diagnostic and treatment facilities not generally available at local hospitals. In low-income countries, modern healthcare is often too expensive for the average person. International healthcare policy researchers have advocated that «user fees» be removed in these areas to ensure access, although even after removal, significant costs and barriers remain. February 1918 drawing by Marguerite Martyn of a visiting nurse in St.

Working together as an interdisciplinary team, many highly trained health professionals besides medical practitioners are involved in the delivery of modern health care. The scope and sciences underpinning human medicine overlap many other fields. Dentistry, while considered by some a separate discipline from medicine, is a medical field. A patient admitted to the hospital is usually under the care of a specific team based on their main presenting problem, e. Physicians have many specializations and subspecializations into certain branches of medicine, which are listed below. There are variations from country to country regarding which specialties certain subspecialties are in.

Interdisciplinary fields, where different medical specialties are mixed to function in certain occasions. Anatomy is the study of the physical structure of organisms. In contrast to macroscopic or gross anatomy, cytology and histology are concerned with microscopic structures. Biochemistry is the study of the chemistry taking place in living organisms, especially the structure and function of their chemical components. Biomechanics is the study of the structure and function of biological systems by means of the methods of Mechanics. Biostatistics is the application of statistics to biological fields in the broadest sense.

A knowledge of biostatistics is essential in the planning, evaluation, and interpretation of medical research. It is also fundamental to epidemiology and evidence-based medicine. Biophysics is an interdisciplinary science that uses the methods of physics and physical chemistry to study biological systems. Cytology is the microscopic study of individual cells.

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