The red blotches are called purpura, in case you want to research. There are 3-4 different types, but skin-thinning prednisone is right in there. Combine that with older age and sun damage, and it can be worse. I am on prednisone taper starting at 60mg in February 2025, now down to 12.5, reducing 2.5 each month. Purpura are not painful, but they sure are ugly. My Rheum doc says it the prednisone, and will go away once off the prednisone. I use base makeup to cover my forearms when I go out. It doesn’t cover completely, but it does soften the look quite a bit. You can get special makeup that covers bruise and scars also. That’s about it. See pic: warning, it’s ugly!