I was diagnosed with sarcoidosis over 18 years ago and likely had it for a good ten years before that. I kept telling the doctors I saw that I couldn't breathe and they kept telling me that I didn't have asthma. No, I didn't, I had sarcoidosis which a good pulmonologist diagnosed. We talked about options for treatment and I said I wasn't excited about the side effects of prednisone. He wrote a doctors though out the world about outcomes when a patient takes the drug verses when one doesn't take it at all. After this analysis and the r view of studies, the conclusion was that there was no difference in outcome after 5 years between patients that took prednisone and those that didn't. My doctor and I decided that I would not take any drugs. I frequently went in for lung tests. The disease progressed for a few years and then went into remission. I still struggle with climbing hills, steps, running, and strenuous activity. To this day, however, I am convinced that this was the right course of action for me. It likely is not right for others but it is my experience. An article from the National Institute of Health "Relapse occurred frequently in patients with sarcoidosis who had been treated with corticosteroids, and rarely occurred in patients who had not been treated with corticosteroids in the past. The striking difference in relapse rate between treated and untreated patients suggests that patients with disease that would later be severe and protracted were almost unerringly identified early in their course. One explanation is that severe presenting symptoms portend a protracted and recurrent course; an alternative explanation is that corticosteroids contributed to the prolongation of the disease by delaying resolution. "
I hope this helps.