Oh, PiP, I'm sorry you've got the battered leg look going on! Me too...and battered everything else, too. Yeah, I think it's the prednisone. I've always got bruises, and sometimes they just appear - even on the backs of my hands. I don't bump them....they just appear. And when I do bump something, the bruise looks awful. Just like you describe - like I've been hit with a bat! I suppose there are other reasons this can happen, but my doc did tell me that I'd bruise easily on prednisone. I don't know if there's anything we can do to prevent them. My legs aren't what they used to be, so capris are about as leg-revealing as it gets for me!
"If you trust Google more than you trust your doctor than maybe it's time to switch doctors."