Hi Naomi,
I am very pleased to hear that you are getting some appropriate treatment.
I have never been prescribed MTX but I am sure that there is loads of information, and experience, on this site. One or two things that I do know about it is that you should not get pregnant while being on it, don't drink alcohol, and also don't look at what any American web sites say about it. NO, I said DON'T look!
Instead, check out this link to the British Association of Dermatologists:
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LoginRegards,
Daryl