An acute or chronic inflammatory process affecting the mucous membranes of any sinus cavity.

Inflammation of the mucous membranes lining a sinus cavity.

Inflammation of the NASAL MUCOSA in one or more of the PARANASAL SINUSES.

Inflammation of the paranasal sinuses owing to a viral, bacterial, or fungal infection, allergy, or an autoimmune reaction.

Inflammatory process of the mucous membranes of the paranasal sinuses that occurs in three stages: acute, subacute, and chronic; results from any condition causing ostial obstruction or from pathophysiologic changes in the mucociliary transport mechanism.

Sinusitis means your sinuses are inflamed. The cause can be an infection or another problem. Your sinuses are hollow air spaces within the bones surrounding the nose. They produce mucus, which drains into the nose. If your nose is swollen, this can block the sinuses and cause pain. There are several types of sinusitis, including Acute, which lasts up to 4 weeks; Subacute, which lasts 4 to 12 weeks; Chronic, which lasts more than 12 weeks and can continue for months or even years; Recurrent, with several attacks within a year. Acute sinusitis often starts as a cold, which then turns into a bacterial infection. Allergies, nasal problems, and certain diseases can also cause acute and chronic sinusitis. Symptoms of sinusitis can include fever, weakness, fatigue, cough, and congestion. There may also be mucus drainage in the back of the throat, called postnasal drip. Your health care professional diagnoses sinusitis based on your symptoms and an examination of your nose and face. You may also need imaging tests. Treatments include antibiotics, decongestants, and pain relievers. Using heat pads on the inflamed area, saline nasal sprays, and vaporizers can also help.

A disorder characterized by an infectious process involving the mucous membranes of the paranasal sinuses.

Sinusitis is inflammation of the paranasal sinuses due to viral, bacterial, or fungal infections or allergic reactions. Symptoms include nasal obstruction and congestion, purulent rhinorrhea, and facial pain or pressure; sometimes malaise, headache, and/or fever are present. Treatment of presumed viral acute rhinitis includes steam...

Sinusitis, acute or chronic inflammation of the mucosal lining of one or more paranasal sinuses (the cavities in the bones that adjoin the nose). Sinusitis commonly accompanies upper respiratory viral infections and in most cases requires no treatment. Purulent (pus-producing) sinusitis can occur...