Hi, I introduced myself last night. I'm under investigation for lupus and other things and included on the blood tests was APS and vasculitis amongst many others. I get this mottling under my skin intermittently and my fingers go red, it also goes up my forearms, red and white blotches . It's under the skin, nothing on the top. Last summer I had similar on my legs, especially my thighs. I haven't remembered to mention it to any doctor as it's way down my symptom list but I recently managed to get some photos. Not sure how well you will be able to see, but do you recognise this? Thanks.