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 …

Jan 17, 2024 · 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.

Sep 9, 2025 · 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 …

Apr 17, 2024 · When you have a sinus infection, one or more of your sinuses becomes inflamed. Fluid builds up, which can cause congestion and runny nose.

Nov 22, 2025 · Sinusitis, also known as a sinus infection, can cause symptoms such as facial pain, congestion, and headache.

Sinusitis, also known as rhinosinusitis and commonly known as a sinus infection, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of …

Apr 17, 2026 · One of the simplest, cheapest, and most effective ways to prevent and treat sinus problems is nasal irrigation. Using a homemade solution, you can often relieve sinusitis symptoms, …

Most sinus infections are caused by viruses or bacteria. This can happen when the common cold, the flu, COVID-19, allergies, or another illness causes your sinus tissue to swell, leading to a buildup of …

Sinus infection is inflammation and/or infection of the sinuses. Signs and symptoms of sinus infections include nasal congestion, facial pain and swelling, sinus headache, fever, and cough.

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 …