Hi, I have a question here. about 6 months ago i started to have sore skin on one ankle, it lasted a few days and went away, then a month later it came back. Then it came on my right arm under the pit, just sore skin for a few days and went away. Last week it started on my left foot on top of the toes then radiated to the shin pad and ten all along the side of the leg and under my lap, just so sore the the touch, but then went away, what is that?