Sinus infections cause all kinds of unpleasant symptoms. While the most famous symptom of a sinus infection is thick, discolored mucus, there are other sinus infections symptoms to be on the lookout for, as well. Our AFC Urgent Care Monroe Road team highlights some additional sinus infection symptoms to be aware of below, so keep reading! What Causes a Sinus Infection? A sinus infection (medically known as sinusitis) is an inflammation of the sinuses. It ...