I was DX a few months ago at 43. I had a chronic cough and tendency to get lung infections all my life. I could never get a simple cold and be over it in a few days like most people. The cough would always linger for a month. But I was relatively healthy, have a 13 yo daughter and lead a busy normal life. The docs finally figured it out with genetic testing, despite a "normal" sweat test. ~J