I also developed a cough. I went to lung Dr. in my area. He sent me for multiple tests, could not find anything. The lung Dr. actually told me to go back to my city Drs. I called my Gastro Mt. Sinai he told me to call Dr. DePalo Lung Dr. also Mt. Sinai. I took all tests that I had on LI gave them to Dr. DePalo. He looked at all tests and MRI. He told me I have bronchiectasis. He gave me an aerobika device . It is a breathing device. He told me to use it every day. I have ulcerative colitis and had my j-pouch surgery 10 years ago. I also have PSC , bronchiectasis, and acid reflux. I believe it all stems from the disease. Ask your Dr. about the cough it could be bronchiectasis. I hope you find an answer. Grace