Multi Search The human body is made up of several critical systems — one of which is the digestive system — that are essential to our health. when the digestive system isn’t working properly, the consequences can become uncomfortable and painful very qu. The sinuses are lined with a thin membrane that produces mucus, which is normally swept along by hair cells and drains through small openings into the nasal cavity. sinusitis (also called rhinosinusitis) starts when this drainage system becomes blocked, usually from swelling due to inflammation caused by infection or allergy. Acute sinusitis causes the spaces inside your nose (sinuses) to become inflamed and swollen. this interferes with drainage and causes mucus to build up. with acute sinusitis, it might be difficult to breathe through your nose. the area around your eyes and face might feel swollen, and you might have throbbing facial pain or a headache. acute sinusitis is mostly caused by the common cold. unless a bacterial infe...