Sometimes, however, you can have a sinus infection that won’t show up on a CAT scan of your sinuses. In this case, you will have drainage
into your throat, called post-nasal drip, and your throat often have too much mucus in it, which can cause a mild sore throat or cough on a chronic basis.
9. WHAT ARE THE SYMPTOMS?
The main symptom of sinusitis is pain. Pain in your face, pain in your head.