Sinusitis is a common inflammation of the paranasal sinuses, the cavities that produce the mucus necessary for the nasal passages to work effectively.
Common signs and symptoms of chronic sinusitis include:
Thick, discolored discharge from the nose
Drainage down the back of the throat (postnasal drainage)
Nasal obstruction or congestion, causing difficulty breathing through your nose
Pain, tenderness and swelling around your eyes, cheeks, nose or forehead
Reduced sense of smell and taste
Other signs and symptoms can include:
•Aching in your upper jaw and teeth
•Cough or throat clearing
Nasal polyps in the nose and sinuses
Nasal polyps Open pop-up dialog box
Common causes of chronic sinusitis include:
Nasal polyps. These tissue growths can block the nasal passages or sinuses.
Deviated nasal septum. A crooked septum — the wall between the nostrils — may restrict or block sinus passages, making the symptoms of sinusitis worse.
Other medical conditions. The complications of conditions such as cystic fibrosis, HIV and other immune system-related diseases can lead to nasal blockage.
Respiratory tract infections. Infections in your respiratory tract — most commonly colds — can inflame and thicken your sinus membranes and block mucus drainage. These infections can be viral, bacterial or fungal.
Allergies such as hay fever. Inflammation that occurs with allergies can block your sinuses.
Antiallergenic sprays and antihistamines