Conditions
Sinusitis
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The sinuses are air-filled cavities in the head situated behind the nose, eyes and forehead. They are lined with a mucous secreting membrane and are connected to the nasal cavity by narrow channels.
If the membrane in the sinuses and nose secretes too much mucous in response to allergy or infection the condition may be called catarrh. If the membrane becomes inflamed the condition is known as sinusitis.
Chronic bad breath is a condition called halitosis and for some it can be recurring problem. Managing halitosis successfully requires more than simply gargling mouthwash every now and then.