Mar 9, 2023 · 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 …

Jan 28, 2025 · A sinus infection occurs when your nasal cavities become swollen, infected, or inflamed. Learn about the symptoms and how to treat them.

Jul 16, 2025 · Sinus infections, or sinusitis, occur when a virus of bacteria enters the sinuses. Read on for a list of common symptoms and treatments.

Read about possible causes of lasting sinus troubles, treatments and how to prevent these problems.

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.

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 …

Aug 13, 2024 · Sinusitis refers to inflammation of one or more of the sinuses, most often caused by infection. Sinusitis can leave you with nasal congestion, facial pain, and headaches. You may also …

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.

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 …

Sep 10, 2025 · To appreciate sinusitis, we must first understand what the sinuses are. The human skull contains four pairs of hollow, air-filled spaces called paranasal sinuses. These are: Frontal sinuses: …