The red blotches are flat and warm to touch, outlines in white. The purplish lacing (Livedo reticluaris) is like in the background.
There is some swelling as well, with pitting edema and poor blood flow it seems.
I have a video that shows it better, but I can't seem to post it.
Here's another shot:
I have been experiencing this and substantial pitting edema. Align with painful burning/tightness feeling inside legs and tenderness
I have the exact same symptom! Especially my knees turning purple.