Radon comes from the radioactive breakdown of naturally occurring radium found in most Florida soils, and in most earthen material used in the building process. In the vast majority of buildings with radon problems, the largest source of radon is soil gas entering the building through small openings in the foundation.
1 Swelling around the eye or the nose can be a later sign of sinus or nasal cavity cancer. Sometimes swelling will be seen on the roof of the mouth. 2  Eye symptoms. Double vision, persistent tearing, or bulging of the eye are all serious warning signs.  Lump in the neck.
Some symptoms of a sinus headache include: pain or pressure in the forehead or around the eyes and cheek(s) tender skin and tender bones over and under the eyes. Pain that's starts from they eyes and goes towards your temples. Blurred vision with extreme headaches.