|Sinusitis was a particularly unpleasant component of the flu that swept the country over the last six weeks or so. |
Those of you who have suffered from sinusitis, which is a common condition in its own right, will know that it can cause much discomfort about the head and face. To discuss the causes and symptoms of sinusitis, you need to understand the relevant anatomy.
The sinuses are spaces or small cavities naturally occurring within the bones of the skull. The cavities are lined with a mucus producing coating, whose job it is to protect the body from airbourne infection. They provide the first barrier to airbourne germs.
The sinuses are normally filled with air. There are four pairs of sinuses and the ones which are most prone to infection and inflammation are located between the eyes and either side of the nose.
Sinusitis may be caused by viral or bacterial infection, allergy or a reaction to dust or environmental pollutants.