I cannot express how excited I was to read about the mysterious symptom......rib cramping! I have broken my ribs 4 times by coughing too hard for too long during exacerbations. The last rib Was broken over 2 yrs ago and yet when I bend, twist or even yawn hard my ribs hurt badly. Rolling horrible, brace yourself and cannot move pain. I have always attributed this pain to my ribs possibly healing incorrectly but all my docs, and I have many, have said that was not probable. Tonight I came upon an article talking about rib cramping on this site and immediately knew by the description that rib cramping was the cause of my pain. Anyone out there have a doc who recognizes this or has a plausible explanation?