Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «N»:
Norplant contraceptive: Implantable progestin in the form of Norplant was approved by the U.S. Food and Drug Administration (FDA) for contraception in 1990 and the newer Norplant 2 was approved in 1996 for contraception.
Made up of matchstick-sized rubber rods, this contraceptive device is surgical...
North Asian tick-borne rickettsiosis
North Asian tick-borne rickettsiosis: One of the
tick-borne rickettsial diseases of the eastern hemisphere, similar to Rocky Mountain
spotted fever, but less severe, with fever, a small ulcer (eschar) at the site of the tick
bite, swollen glands nearby (satellite lymphadenopathy), and a red raised (...
Northern blot: A technique in molecular biology, used mainly to separate and identify pieces of RNA.
Called a Northern blot only because it is
similar to a Southern blot (which is named after its inventor, the British biologist M.E. Southern). There is also a Western blot....
Norwalk virus: A family of small round viruses that are an important cause of viral gastroenteritis (viral inflammation of the stomach and intestines). Norwalk disease is a significant contributor to illness in the US. Only the common cold is reported more frequently as a cause of disease. About a t...
Norwalk-like virus: See: Norovirus....
Norwegian scabies: See crusted scabies....
Nose: The external midline projection from the face.
The purpose of the nose is to warm, clean, and humidify the air you breath. In addition, it helps you to smell and taste. A normal person will produce about two quarts of fluid each day (mucus), which aids in keeping the respiratory tract clean ...
Nose job: Slang for plastic surgery on the nose, known medically as a rhinoplasty.
This is a facial cosmetic procedure, often performed to enhance the appearance of the nose. During rhinoplasty, the nasal cartilages and bones are modified, or tissue is added. The aim is to improve the visual appeal...
Nose picking: Medically referred to as rhinotillexomania....
Nose, runny: Rhinorrhea is the medical term for this
common problem. From the Greek words "rhinos" meaning "of the nose"
and "rhoia" meaning "a flowing." ...
Nosebleed: Its medical name is epistaxis....
Nosebleed, causes of
Nosebleed, causes of: The nose is a part of the body
that is very rich in blood vessels (vascular) and is situated in a vulnerable position on the face. As a result, any trauma to the face can cause bleeding which may be profuse.
Nosebleeds can occur spontaneously when the nasal membranes dry out, c...
Nosebleed, treatment of
Nosebleed, treatment of: To stop a nosebleed, you
should pinch all the soft parts of the nose together between your
thumb and index finger, and press firmly toward the face, compressing
the pinched parts of the nose against the bones of the face. Hold the
nose for at least five minutes, and rep...
Nosocomial: Originating or taking place in a hospital,
acquired in a hospital, especially in reference to an infection.
The term "nosocomial" comes from two Greek words: "nosus"
meaning "disease" + "komeion" meaning "to take care of."
Hence, "nosocomial" should apply to any disease contracted by...
Nosology: The systematic classification of diseases, or the branch of medical science that deals thereto. The adjective is nosologic. There is "ongoing nosologic controversy and confusion" concerning "dementia with brainstem and neocortical Lewy bodies" (Neurology,1997;48:126)....