I was born with asthma. 73 now. Over the years I suffered from allergy related attacks. While on prednisone for PMR I developed GERD. I was only on steroids for 6 months. Its a nasty drug with all it left me with. I had two CT scans of the abdomen and pelvic neither showed anything. I then had a upper endoscopy. They found nothing but a slight hiatal hernia. Gastroenterologist recommended not letting the GERD get out of hand but no damage or cancer. Dr. recommended several drugs but I went with the 40mg famotidine. I thought that the easiest on side effects. I have to take one tablet every day to keep it under control but it works for me. Dr suggested the GERD could be causing the Dyspnea. She ordered a chest x-ray. Chest xray suggested COPD. Gastro sent me to a pulmonologist. I just finished all the testing and pulmonary says its not COPD its some slight scaring of my lungs probably from valley fever. I live in Phoenix. Bottom line is I had PMR 4 years ago and took steroids for 6 months. 4 years later I now take a drug for BP, Cholesterol, upper end A1C, GERD, and lung scaring. Probably none of these could I say were caused by prednisone or PMR. Could have just as easily been the COVID shot which made me sick. Could be at 73 its time to shut down. After all the testing they really couldn't find anything that was wrong. Good luck.