The inflammation traps mucus inside your sinuses, preventing the natural flow from the back of your throat to your stomach. When this is caused by bacteria or viruses, it is called a sinus infection.

And as he explains, viral infections can trap mucus inside sinus passages to create an environment that allows bacteria to grow out of control. Wellness Is your sore throat allergies or a cold?

Though more uncommon, cough and a sore throat can accompany sinusitis, too. One of the telltale signs to discern if you have allergic rhinitis or a sinus infection is if you have itchy ...