Sinus Infection (Sinusitis): Causes, Symptoms Treatment Sinusitis is an inflammation, or swelling, of the tissue lining your sinuses Sinuses are structures inside your face that are normally filled with air Bacterial infections, viral infections and allergies can irritate them, causing them to get blocked and filled with fluid
How to Get Rid of a Sinus Infection - Healthline What causes a sinus infection? A sinus infection occurs when the tissue in the sinuses swells up This leads to a buildup of mucus, pain, and discomfort
What’s causing your sinus trouble? - Mayo Clinic Press Sinus pain and discomfort typically starts when your sinuses become irritated and inflamed, causing swelling that can narrow or close off the openings This makes it hard for mucus to drain out of your sinus cavities Mucus and air pressure build, causing a feeling of stuffiness and congestion
Sinus Infection | Advocate Health Care Learn about sinus infection symptoms, causes and treatments Find out how to get relief for sinusitis pain, congestion and pressure
Sinusitis - Ear, Nose, and Throat Disorders - MSD Manuals Sinusitis is one of the most common medical conditions Sinusitis may occur in any of the four groups of sinuses: maxillary, ethmoid, frontal, or sphenoid Sinusitis nearly always occurs in conjunction with inflammation of the nasal passages (rhinitis), and some doctors refer to the disorder as rhinosinusitis