The mucous membrane swells when it becomes
inflamed, blocking the drainage of fluid from the sinuses into the nose and
Mucus and fluid build up inside the
sinuses, causing pressure and pain.
Bacteria are more likely to
grow in sinuses that are unable to drain properly.
Bacterial infection in the sinuses often causes more
inflammation and pain.
Colds usually trigger this process, but any factor that
causes the mucous membrane to become inflamed may lead to sinusitis. Many
people with nasal allergies (allergic rhinitis), for instance, are
likely to have recurring or long-term (chronic) sinus infections. Nasal
polyps, foreign objects (usually in children),
structural problems in the nose such as a
deviated septum, and other conditions can also block
the nasal passages, increasing the risk of sinusitis.
It is possible that the main title of the report Angioedema, Hereditary is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
January 24, 2014
This information is not intended to replace the advice of a doctor.
Healthwise disclaims any liability for the decisions you make based on this