I have been diagnosed with COPD multiple times. Then I find a reputable pulmonologist to verify the diagnosis, and the pulmonologist each time tells me I don't have COPD. Rather, I have a bunch of genetic issues (I have checked it with a few genetics labs to be sure). Then I forget the COPD until another session. I really would like to know the whole picture, but I am learning. I know I have a pile of things... bronchiectasis, Clarkson's, many cancers (Barrett's, basal cell, etc.), Gelsolin, Warren-Warburg, several encephalopathy forms, etc. But no legitimate test has uncovered COPD. I am beginning to think that COPD, like so many other "diseases" are most commonly diagnosed when the doc simple has no idea what is wrong. There may really be a COPD, but I think at least half the diagnoses are mistaken. A good Whole Genome Sequencing would be much better.