I googled Sombra but didn't know if I should get "hot or cold" for burning legs. My feet and hands get beet red and one ankle is a bluish color all the time. I hesitate to ask my Rheumatologist for pain medications, he's not a talker and he seemed suspicious when I first saw him, he seemed to think I was trying to get pain pills and any questions, he refers me to my PCP to handle. My mom passed from Rheumatoid vasculitis with big sores on her legs, my 13 year old niece passed from Lupus, a stroke and my sister has ITP so it runs in my family. I believe I have Rheumatoid vasculitis but the doctor is being cautious, I'm 76 and wish there was a medicine that doesn't cause nausea stomach upset but time is ticking. Thank you so much for allowing me to complain, my has heard enough, LOL.