Hi I was diagnosed with seronegative R A in July. I have been on 15mg MXT and 5 mg folic acid weekly recently upped to 20 mg after a couple of flares. It's winter , but it hasn't even been cold yet and my lips have now got very dry, peeling and sore with one patch that is trying to heal but bleeds sometimes. I've tried all sorts of lip balms but they don't make any difference. I assume it's the MXT. should I increase the iron do you think?