I have had this cough that comes and goes with no other symptoms with it really. I ended up in the ER a few weeks ago because I was having problems breathing and they did an EKG and a bunch of lab work and everything came back okay other than telling me I had what is called Costcondritis. Also, I have anxiety and didn't know if it was related or not, so my dr changed my anxiety med. Well, here it is now and I am still having this cough. It only happens on and off throughout the day and happens when I am trying to talk. Do you think it could be due to nerves?