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.
Symptoms of nasal cavity cancer and paranasal sinus cancer include chronic congestion, recurring infections of the sinuses, headaches and recurring nosebleeds, according to Cancer.net.
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. With a sinus headache, you will often deal with post nasal drip, which is a collection of mucus in the back of your throat when you're lying on your back. You may also be congested. These symptoms are also typical of migraine.