Heh, realized I never answered. It's from Pyoderma gangrenosum, a rare autoimmune disorder that tricks my body into thinking my legs are bad. Have a big scar on my left leg and a smaller one on my right leg, but it's almost healed up now.
Oh, and I've recently started on my first theme - it's a a platinum-colored one that's based on Curve (which is why I can't show anyone previews of it yet
). I think it's a really great theme, though, and I'm planning to do more.