I was diagnosed with R.A. 5 weeks ago and have been taking Methotrexate 15 mg orally. For the past 4 days I've had a mild burning sensation in my chest/lungs that I have never had before. My doctor listened to me breath and didn't hear anything. Any ideas ?





Thanks for answering. I've looked all over the internet and can't find anything that relates. It's like I breathed in some awful chemical fumes and my lungs are irratated, although I did not.