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Norwalk virus
Norwalk virus A virus that may cause GI infection and diarrhea. See also gastroenteritis.
RELATED TERMS--------------------------------------
Virus Ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein.
Infection Anything that invades the body and reproduces. Infections can be bacteria, protozoa, fungi, or viruses. Bacteria and fungi are one celled creatures that cause many infections including strep throat, bladder infections, and some lung infections. Fungi cause “athlete’s foot” and thrush, an infection in the mouth. Protozoa are small organisms with many cells that can cause infections in the guts or in the lungs. Most healthy people do not get protozoal infections, but people with suppressed immune systems can. Viruses are not really organisms; they are tiny particles that can live only inside another cell. They reproduce by taking over a cell and causing that cell to make more virus particles, rather than doing what the cell is supposed to do. Viruses cause most colds and flu cases.
Diarrhea Passage of excessively liquid or excessively frequent stools.
Gastroenteritis An infection or irritation of the stomach and intestines, which may be caused by bacteria or parasites from spoiled food or unclean water. Other causes include eating food that irritates the stomach lining and emotional upsets such as anger, fear, or stress. Symptoms include diarrhea, nausea, vomiting, and abdominal cramping. See also infectious diarrhea and travelers' diarrhea.
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Norwalk doctors All doctors near Norwalk, the United States of America. Doctors who can assist a patient in Norwalk.
Norwalk Hospital Norwalk Hospital is a hospital in Norwalk, Connecticut (USA).
Norwegian doctor A doctor who, being or not a citizen of that country, has been admitted to practice medicine in Norway.
Norwich Community Hospital The Norwich Community Hospital is a hospital in Norwich, England (Great Britain).
Norwich doctors All doctors near Norwich, Great Britain. Doctors who can assist a patient in Norwich.
PREVIOUS AND NEXT TERMS--------------------------------------
Nissen fundoplication An operation to sew the top of the stomach (fundus) around the esophagus; used to stop stomach contents from flowing back into the esophagus (reflux) and to repair a hiatal hernia.
Nitroglycerin A medication used to relax or dilate arteries.
Non-invasive procedures A diagnostic effort or treatment that does not require entering the body or puncturing the skin.
Nontropical sprue See celiac disease.
Nonulcer dyspepsia Constant pain or discomfort in the upper GI tract. Symptoms include burning, nausea, and bloating, but no ulcer. Possibly caused by muscle spasms.
Norwalk virus
Nuclear medicine imaging techniques Techniques that are used in the diagnosis, management, treatment and prevention of disease. Nuclear medicine is unique in that it often allows for diagnostic information to be discerned prior to the onset of physical symptoms. It is used significantly in the areas of oncology, neurology, cardiology and orthopedics, among others.
Nuclear medicine scan Image produced as the result of a nuclear medicine procedure.
Nutcracker syndrome Abnormal muscle tightening in the esophagus.
Nuclear transfer A procedure in which a nucleus from a donor cell is transferred into an enucleated egg or zygote (an egg or zygote from which the nucleus/pronuclei have been removed). The donor nucleus can come from a Germ cell or a somatic cell.
Nuclei See nucleus.
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