Hi Kirsty,
I'm not sure if my hair loss was due to my imuran or my pred, but it wasn't too bad. No one would know except me and my hairdresser. It was apparrent when I washed my hair and a lot would come out in my hands. It was mostly around the back of my hairline and especially where I wore my glasses. I've reduced my pred now and it's growing back (hence the reason I think it might have been the steroids). I wouldn't worry too much about it - like I said, from my experience no-one would know if I didn't show them. Good luck with whatever you decide!
~Kathy