I have now reduced from 60 mg Prednisilone to 50mg in two steps and at the same time taking AzathioprineI as a new med. Does anyone know what the Azathioprine does. I had a really bad day yesterday, going back to all my old symptoms. Not helped by my husband not grasping that unless I get to sleep by about 10.30 I tend not to get any sleep at all and he was up at 12.15 and then I just didnt sleep a wink all night. It's hard to sleep in the day too because he is so noisy!