s a possibility that you have a fungal infection
, which is very common in seemingly incurable sinusitis, according to the Mayo
Clinic. The lead doctor in the study, Dr. Jens Ponikau, patented the idea of a nasal anti-fungal spray, but he's still working on it.
In the meantime, the Sinus Flush worked against a 5 year problem similar to yours, which included a fungus, and against every other sinus infection or cold i've had since, and I have a long Celtic head with godawful sinuses.