Treatment may depend on the cause. A sinus infection, also known as sinusitis or rhinosinusitis, occurs when your nasal cavities become swollen and inflamed. Fluid buildup in the sinuses can allow ...

KEY POINTS Chronic rhinosinusitis refers to symptomatic inflammation of the nose and paranasal sinuses that has been present ...

Bacterial sinusitis can also develop when the nasal cavity and sinuses initially become inflamed due to a viral infection. When the fluid builds up in the sinuses, bacteria can grow, causing a ...

Sinusitis, or a sinus infection, can cause a stuffy or runny nose, a decreased sense of smell, and other symptoms. You can usually manage the symptoms at home with a decongestant. The sinuses are ...

and nasal cavity. It leads into the frontal, lacrimal, and nasociliary nerves, which pass through the superior orbital ...