Female 36: I noticed a burning sensation on my side a few days ago. There was a red bump and that was all. Next day the redness spread and turned red/purple.. I outlined it with a pen. This morning I noticed a white area around the red and the whole thing is one massive whelp. I circled it and now the area outside of the circle is spreading, but it’s white and raised off the skin. I don’t know if this is a bite, Cellulitis, MESA or what? Opinions?