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 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.
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. Learn about the causes, duration, and treatment options for sinusitis in …
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 …
Sinusitis - Ear, Nose, and Throat Disorders - MSD Manual ...
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 …
Uncomplicated acute sinusitis and rhinosinusitis in adults ...
Nov 14, 2025 · Comprehensive guide on treating uncomplicated acute sinusitis and rhinosinusitis in adults, including diagnosis, management strategies, and treatment options.