I also have Pulmonary Fibrosis. My lungs are 60% gone. The doctors tell me that mine is Idiopathic. This means they do not know the cause. Prednisone does help with my lungs, but it makes my diabetes worse. I have found that deep breathing exercises and a diet rich in fruits & vegetables helps. Echinacea, to stengthen my immune system also gives some relief. Get online to the Pulmonary Fibrosis Association (pulmonaryfibrosisassn.com)and also to the American Lung Association for more information. There are new clinical trials starting soon with advanced medications. These web sites will link you to them.