Most sinus problems are due to allergy, infection, or a foreign substance inhaled up the nose. Find out what products are available for sinus and nasal problems.
sinusitis
Post-nasal drip
Post-nasal drip is the feeling of mucus moving down the back of the throat. You may get it if the mucus in your nose and sinuses becomes thicker or increases.
Sinusitis
Because the drainage holes from the sinuses are narrow, they block up easily. So any excess mucus production can cause a blockage, and pressure builds up in the sinuses.