I've had a chronic cough that just won't go away. I've been told it "may" be caused by my medication for the Rheum. Arthritis I have had this past 6 yrs, but I've had this cough for longer than this. It usually is non-productive, except when I go into a coughing fit, causing me to gag and eventually cough up foamy, white phlem. It has also cause me to throw up when I've coughed so hard. By this time my lower back hurts during the coughing and around my shoulders. It can also be started when I get excited and/or start laughing. I've seen my doctor and she prescribed a nasal spray, but it doesn't seem to help when I use it regularly. Any suggestions on what may be causing this would be so helpful. Thank you. Carole :)