Sinus Infections
Acute sinusitis or sinus infection is sometimes called acute rhinosinusitis. The condition is painful and can even be dangerous, due to the danger of infection spreading into ear canals, teeth or even the brain. Sinus infections that recur or that do not clear up within a few days are known as chronic sinusitis. The condition interferes with breathing because the membranes become swollen and inflamed. The nasal passages then become constricted. There are several risk factors for development of sinusitis, including asthma, hay fever, abnormality in the nasal passages such as a deviated septum, medical condition or exposure to pollutants.
Why Sinus Infections Develop
Sinus infections often develop following a cold or the flu. Triggers can include a fungal infection or bacteria that lodge in irritated membranes. If swollen membranes caused by a cold block normal drainage, the sinus cavity can become a pus-filled pocket. The drainage appears thick and may be yellow or greenish in color. Another cause of a sinus infection may be a physical abnormality that prevents normal nasal discharge. The moist environment of the sinus cavity is perfect for the growth of the dead cells and organisms to the point where pain or discomfort increases.