here's a good start.
Read the link as I've had a couple of 'em now.
Is it just me, or is it kind of hilarious that in there among the infection-ridden, necrotizey, bone-crumbly, tendon-rupturey joy of cortisone overuse they always list "excessive whitening of the skin at the injection site" as a serious side effect? Seriously? Personally, I've already got a half-dozen surgical scars in the area, but it seems to me even if one had pristinely perfect skin nigh unto a baby's posterior, debilitating pain and inflammation would probably be more important than a patch of extra-light skin. So much so that it doesn't seem entirely credible to call it a "serious side-effect"