Cystic Fibrosis
mucus build up
I think what possibly causes mucas build up especially first thing in the morning is eating foods and consuming drinks which contain dairy products. Drinking plenty of water will alleviate the affects and make the mucas thinner.
Sinus pressure builds up from accumulated mucus that irritates the inside of the nose and causes sinus pressure. From there you have a full blown cold and can break down the mucus with medication.
The defective channel causes a build up of chlorine ions in the airways cells. This higher concerntration of chlorine causes water to enter ther cell via osmosis. The water is removed from the mucus in the airway and because the chloride channel is no longer letting chlorine out the water remains in the cell and not in the mucus.
Mucus is mostly dirt and bacteria build up.
Your lungs are the reasons you body has Oxygen. In your lungs, we do produce mucus, which we cough up because of the cilia in our lungs. Smoking causes this cilia to not move the mucus out of your lungs which in turn causes problems.
build up of magma
A build up of calcium
mucus causes green saliva>
Infection.
Ploysinusitis is the simultaneous inflammation of multiple sinuses. What causes this is that mucus gland gets blocked, but the gland keeps making mucus and cannot drain out. The mucus will then stretch the gland and creating a mucus filled cyst.