Hi BB. I have bronchiectasis (for 64 years so far), mild I would say compared to others with it far worse. On Xmas eve 2015 I was admitted to hospital with what turned out to be microscopic polyangiitis. A rare form I was told. Not a lot known world wide. Prednisone and methotrexate prescribed which straight away took away the intense pain I had in my leg muscles especially. Slowly over 9 months I was weaned off the meds except for 20 mg methotrexate once a week and folic acid 5 mg once a week.
I have an exceptional lung specialist who looks after me. The problem with the above meds as you know is that your immune system is compromised by them. More susceptible to infection when you have a lung problem, hence the Azithromycin etc that you take.
For three months I felt terrible as you do. Ulcers in the mouth, skin changes to my face etc. plus the uncertainty of what the future held for me. As my prednisone and meth was reduced the ulcers etc cleared up. I stayed on Bactrim and Doxycycline for at least a year. Doctor is still concerned that the vasculitis could return so keeps me on the meth and folic acid. He has followed what is known as world practice but says not enough is known about this form of vasculitis.
My life with bronchiectasis is back to where it was before microscopic polyangiitis. Still have to get antibiotics now and then for lung infections but cannot complain. I lost 10 kg during the worst of it, which was good, but have put on 12 kg. I had no taste for food in the beginning with my mouth the way it was. Continually had a metallic taste in my mouth.
Stay positive. Hope you have a good specialist looking after you. Cheers..