I had a cough for about about two months after I got a cold. It took about a month to get over the cold and two months for the cough. I have a harder time recovering from even minor things like colds since I've gotten rsd and I had a harder time getting rid of the cough because I think the rsd has weakened my immune system. I don't think rsd caused the cough though, it just made it harder to get rid of. The dr couldn't really do much except for giving me a cough suppressent. I hope you feel better soon. Take care.