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 …
Sinus Infection: Symptoms, Causes, and Treatment - Healthline
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.
Sinus infection: 11 symptoms and treatments - Medical News Today
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.
Sinus Infection Basics | Sinus Infection | CDC
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 - Johns Hopkins Medicine
The sinuses are cavities, or air-filled pockets, that are near the nose passage. The sinuses make mucus. This fluid cleans the bacteria and other particles out of the air you breathe. What causes sinusitis? A …
Sinus Infection (Sinusitis): Symptoms, Causes, Duration, and ...
Nov 22, 2025 · Sinusitis, also known as a sinus infection, can cause symptoms such as facial pain, congestion, and headache.
Acute sinusitis - Symptoms and causes - Mayo Clinic
Aug 29, 2023 · Acute sinusitis causes the spaces inside the nose, known as sinuses, to become inflamed and swollen. Acute sinusitis makes it hard for the sinuses to drain. Mucus builds up. Acute …