I am newly diagnosed with hypersensitivity chronic pneumonitis, not to be confused with pneumonia. The symptoms are very similar to COPD--shortness of breath, cough, fatigue, and so on. The cause is often not found. Fifty percent of the time it is never found. The other cases point to chemicals, feathers, dog dander, etc.
The alveoli are attacked by the immune system and fibroids can develop. I am on anti-rejection pills to treat the attackers. I have been told it will take months and months of treatment to reach improvement, which may then plateau. Also, I am on oxygen 24/7 on 2-5 liters per minutes. It's a life saver! The paramedics gave it to me right away because I was at 62 % in the pulse oximeter. I was in the hospital for a week. The standard bronchodilators and inhalers only had little effect... I guess they are more for COPD.
I would like to bring this up topic to see if there are others willing to share stories and information on their diseases. We can all learn from each other!