Prednisone seems to have no positive effect, and
nebulizer treatments and my rescue inhaler will sometimes seem to help and other times will not. I am on Advair 250 twice per day (and have been for years). Adding Symbicort did not help.
I have been to multiple specialists, including a pulmonologist, cardiologist, infectious disease specialist, tthree doctors of internal medicine, an allergist, and an ear/nose/throat doctor.