Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


inflammation of the membrane lining a sinus, esp a nasal sinus
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an inflammation of the paranasal sinuses in man and animals. In humans, acute sinusitis usually arises as a complication of influenza, acute respiratory diseases, or other infectious diseases; chronic sinusitis develops from acute sinusitis that has not been completely cured.

The general symptoms of acute sinusitis include elevated body temperature, headache, abundant nasal discharge, and difficulty in breathing through the nose, most often on one side. With chronic sinusitis, there is usually no increase in body temperature and the other symptoms are less pronounced. Localization of the process determines the symptoms. Sinusitis may be catarrhal or purulent, depending on the type of inflammation. With chronic sinusitis, proliferations of the mucosa (polyps) often form in the paranasal sinuses and the nasal cavity.

Several different forms of sinusitis are distinguished, depending on which sinus is affected. The most common form is maxillary sinusitis, which is an inflammation of the maxillary sinus. With frontal sinusitis, the frontal sinus becomes inflamed; with ethmoid sinusitis, the ethmoidal labyrinth; and with sphenoid sinusitis, the sphenoidal sinus. Sometimes the inflammatory process spreads to all the paranasal sinuses on one or both sides (pansinusitis). Treatment includes the use of medicinal agents, the administration of heat (hot-water bag, compress), and physical therapy. Sometimes surgical treatment is indicated. Prophylaxis includes the timely treatment of the cause of the disease. [23–1294–]

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


Inflammation of a paranasal sinus.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The radiological signs of sinusitis did not disappear after implant removal but after the surgical closure of the OAF.
Those with chronic sinusitis typically suffer from a combination of headaches, congestion, facial pain/pressure, and other symptoms impacting their physical, functional and emotional quality of life.
Sinusitis in bovines typically involves frontal or maxillary sinus.
(8) With the explosion in research on the human microbiota (trillions of cells in the gut that dramatically affect health), scientists are finding that fungi probably play a role in many human health problems including sinusitis.
To evaluate the prevalence of sinusitis in children aged 3-15 years by clinical and radiological (X-ray PNS) methods in children with RRTS in HIMS, Hassan, Karnataka, India.
* The report provides a snapshot of the global therapeutic landscape of Sinusitis
To date, the medical literature contains no data on the incidence of acute sinusitis after maxillary sinus fractures.
However mucociliary functions are determined by ciliated epithelium and the matrix of maxillary sinus mucosa.5 Despite some clinical studies the pathological characteristics of recurrent odontogenic maxillary sinusitis should be clarified.
Predisposing or precipitating factors for sinusitis, if any, were also recorded.
"If you do not treat sinusitis in time, it could become chronic and the infection could spread to the ears, lungs or eyes," said Dr Magdy Dhakeb, senior consultant, head of ENT, RAK Hospital.
The Results: The numbers show a 66% lower risk of hospitalization for sinusitis and 19% lower risk for pneumonia after the introduction of this vaccine.
A Acute sinusitis is a condition in which the cavities around the nasal passages or sinuses become swollen and inflamed.