A sinus infection, also called sinusitis, is an inflammation of the air cavities in the bones around your nose and eyes, including the paranasal cavities. When drainage sites for the sinuses are blocked, they fill with mucus and you can feel pain and pressure.
SYMPTOMS OF SINUSITIS:
CAUSES OF SINUSITIS:
Viruses: In adults, 90 percent cases of sinusitis result from a virus
Bacteria: In adults, 1 case in 10 is caused by bacteria
Pollutants: Chemicals or irritants in the air can trigger a buildup of mucus
Fungi: The sinuses either react to fungi in the air, as in allergic fungal sinusitis (AFS).
Acute sinus infections often start with inflammation from allergies or a viral infection (such as a cold) and sometimes develop into a bacterial infection.
SYMPTOMS OF ACUTE SINUSITIS:
RISK FACTORS OF ACUTE SINUSITIS:
nasal passage abnormalities, such as a deviated septum or nasal polyp
tobacco smoking or frequent breathing in of other pollutants
large or inflamed adenoids
spending a lot of time in areas where infectious germs are frequently present
a weakened immune system
chronic sinusitis lasts longer than 12 weeks and can be caused by many different diseases.Also known as chronic rhinosinusitis, this condition interferes with drainage and causes mucus buildup. Breathing through your nose might be difficult. The area around your eyes and face might feel swollen, and you might have facial pain or tenderness.