Sinus Infections and What Causes Them
It is also called sinusitis. When the sinuses are inflamed, drainage is blocked and the sinuses fill with mucus. This can cause a sensation of pain and pressure along with a stuffy nose and sometimes a fever. © Verywell, 2018 Chronic sinus infections are usually due to ongoing inflammation. Structural abnormalities in the sinuses can predispose to chronic or recurrent sinusitis. The sinuses are lined with mucous membranes that normally produce mucus....