“…The most prevalent physical symptoms are cough, shortness of breath, fatigue, sinus discharge, difficulty sleeping, and pain [1,5,11,12]. Cough, shortness of breath, sinus discharge, and fatigue often are rated as the most severe or distressing symptoms [1,5,11,25]. Additionally, initial data from one trial in 61 adults with CF found that a significant portion of participants reported cough and fatigue as highly distressing (i.e., "quite a bit" or "very much" distressing) at baseline, as well as at 3-, 6-, and 9-month follow-up assessments [26].…”