thanks dea and kybert. this is all interesting to me...before, i was told that this was uncommon, seen in cf, with no name/diagnosis, and thought to be an immune response. but, my investigating has lead me to cf arthritis, and now hearing from you convinces me of that. it started about 1 year ago. it used to be once every or every other week. it slowed down, and now for about three months it happens every day. somedays i just manage, but mostly i'm totally immobile, but i hate it! i'm only 21, newly married and i feel like an old lady. anyway...have you been given an explanation as to how or why this occurs? and, do you feel any coorelation to times when you exacerbate, or are at least more tight or congested as to when the swelling occurs? because, and maybe i'm wrong, but i think that when i get it really badly, its been a day that i've been tighter, coughed more, and had a lot of walking and moving.