I have a persistent cough sounds like bronchitis however I have been through 2 rounds of antibiotics, prednisone, inhaler, and cough syrup and it has not gone away. Every time I go to the doctor they take a chest X-ray and say it is bronchitis however it doesn t go away. Went to pulmonary doctor had all the breathing test was fine put me on cymbocort. Has not done anything. I am very active and this is effecting my lifestyle any suggestions.