I have been receiving treatment for cough variant asthma for over 10 years. I have a daily maintenance asthma medicine, a rescue inhaler and a nebulizer. None of these are working anymore for my symptoms. I'm starting to question if I truly have asthma or if maybe I have been misdiagnosed. The only treatment I seem to respond to is prednisone. Does anyone else have this problem? I have noticed that as I have gotten older my symptoms have become more regular and difficult to treat.