Well I would get that check out. It could be a lot of things, I have lupus and my rashes I get during a flare up is more spread and on my face and neck and chest too. But you never know, It could be some kind of rash from lupus , or new medicine that you may be on, or it could be some problem with your circulation in your legs. I would give up, and great job on pictures, keep that going and I also do a journal so when I go in to see my family doctor and my specialist's ( which I have 4), they love the idea that I do this. It helps them to come up with a game plan.
I'm glad it's not vasculitis. I have that and it looks just like yours for the first day. Then it spreads and gets purple and black. Good luck in diagnosing it.
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