I'm on my 2nd round of pred. Started the first round at 40 and tapered down 10 a week until I started flaring again at 10. Doc put me back up to 40 and I've been tapering slower this time (40 for a week, 30 for a week, 20 for two weeks, 10 for two weeks - I'm currently at 10). The taper seems to be going better this time - no signs of flaring or joint pain.
Although the first round didn't really do the trick over the long haul, I've had a pretty good experience with pred. Like BB Decaf said, the energy boost is awesome. I got so much done during those first few weeks. And I didn't notice any anger or psychosis of any kind. For the most part I was euphorically happy! It totally knocked out any signs of my disease while I was on the higher doses. Sweet relief! I also didn't have any weight gain or moon face during that first round. But since then, on my second round, I've gained like 7 pounds, which seems to have landed right on my gigantic face. But remember, I've been on it now for close to 9 weeks. I'm so close to being off it, and I'm hoping sooo much I don't start flaring again!
Hopefully you'll just need a quick 4 week treatment or something like that to knock your symptoms down, in which case I wouldn't worry too much about the side effects. I think once you experience it, you would gladly take the side effects over the pain you are in now!
Lori