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Patients & Consumers Conditions En Español Find an Allergist / Immunologist Just for Kids New Research Parent Resources Pollen Levels Publications Request a Speaker School Tools Seniors The Virtual Allergist™ Treatments Donate Now Search by Condition (A-Z) Search by Topic Allergy & Asthma Issues Educational Brochures Elements of Allergy and Asthma Order Public Education Materials Allergy Shots Drug Guide Sublingual Immunotherapy (SLIT)		Rhinosinusitis: What is Rhinosinusitis? Rhinosinusitis is an inflammation of the nasal mucosa and paranasal sinuses. In its acute form, it is almost always caused by a viral or bacterial infection. In its chronic or persistent form, the cause is less clear, although viruses, bacteria or fungi may play a role. Rhinosinusitis is preferred over the term "sinusitis" since nasal symptoms almost always occur in conjunction with sinus infections. <back>
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