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.
Signs and symptoms of sinus headaches â regardless of cause â may include: 1  Pain, pressure and fullness in your cheeks, brow or forehead. 2  Worsening pain if you bend forward or lie down. 3  Stuffy nose. 4  Fatigue. Achy feeling in your upper teeth.