I'm not on MTX and was recently on Suplha but rheumy took me off all RA meds to see if Fibro meds worked for me. My hair did fall out rapidly around a year ago, but this past 2 weeks it is coming out all over the place. If I were a dog you would say I was shedding my hair. I had long thick hair, it's now getting very thin and patchy. Even other people have noticed it.