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  1. Sinus Infection (Sinusitis): Causes, Symptoms & Treatment

    Sinusitis is an inflammation of the tissues in your sinuses (spaces in your forehead, cheeks and nose usually filled with air). It causes facial pain, a stuffy or runny nose, and sometimes a fever …

  2. Sinus Infection (Sinusitis): Symptoms, Causes, Duration, and

    6 days ago · Learn about the causes, duration, and treatment options for sinusitis in this comprehensive guide.

  3. Chronic sinusitis - Symptoms and causes - Mayo Clinic

    An infection, growths in the sinuses, called nasal polyps, or swelling of the lining of the sinuses can cause chronic sinusitis. Symptoms might include a blocked or stuffy nose that makes it …

  4. Sinusitis - Wikipedia

    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 …

  5. Sinusitis - Johns Hopkins Medicine

    Detailed information on sinusitis, including causes, symptoms, diagnosis, and treatment.

  6. What to do about sinusitis - Harvard Health

    May 13, 2022 · Sinusitis occurs when blocked sinuses cannot drain and the backed-up mucus gets infected. The simplest and often most effective treatment is daily nasal irrigation. It can …

  7. Sinus Infection Basics | Sinus Infection | CDC

    Apr 17, 2024 · Sinus Infection Basics Key points Stuffy nose that just isn't getting better? You might have a sinus infection, also called sinusitis. You don't need antibiotics for many sinus …

  8. Sinusitis: Symptoms, Risk Factors, Treatment, and More

    Jan 24, 2025 · Sinusitis occurs when your nasal passages become inflamed. Learn about the symptoms, causes, and how to treat it.

  9. Sinusitis | Sinus infection Symptoms - MedlinePlus

    Jun 29, 2025 · Sinusitis (inflamed sinuses) is sometimes caused by an infection, but there are several types (such as chronic or recurrent). Find all the symptoms.

  10. Sinusitis: Symptoms, causes, and treatment - Medical News Today

    Jul 11, 2025 · Sinusitis involves inflammation of the paranasal sinuses. It can be caused by viruses, allergies, or autoimmune reactions, leading to mucus buildup and irritation. Symptoms …