Sinusitis is a common condition in which the lining of the sinuses becomes inflamed.
Sinusitis is a common inflammation of the paranasal sinuses, the cavities that produce the mucus necessary for the nasal passages to work effectively.
Sinusitis can stem from various factors, but it always results from fluid becoming trapped in the sinuses. This fuels the growth of germs.
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 build-up of mucus
Fungi: The sinuses either react to fungi in the air, as in allergic fungal sinusitis (AFS), or they are invaded by fungi, as in chronic indolent sinusitis.
Symptoms vary, depending on the length and severity of the infection.
If the patient has two or more of the following symptoms and thick, green or yellow nasal discharge, they may be diagnosed with acute sinusitis.
facial pain and pressure
reduced sense of smell
In more advanced cases, the following symptoms may also be present:
halitosis, or foul-smelling breath
If these symptoms continue for 12 weeks or longer, the doctor may diagnose chronic sinusitis.