What is Sinusitis?
Sinusitis is a common condition in which the membranes in your sinus cavities become inflamed and swollen. This inflamation causes a blockage in the nasal passage that inhibits natural draining of mucus from the sinuses. Because the mucus is not allowed to drain, it backs up into the sinus cavities, causing you pressure and discomfort.
►Learn more about Chronic Sinusitis