I scratched it and a flaky whitish skin
came up and after, was red. This remained constant for two years, always the one, light brown remaining in size and I could always irritate it to reddish, going back the next day. Now several more have appeared, well 5 total, exactly the same, in the past two weeks around my leg. What ARE they? What causes it, a fungus, cancer of the liver, colon problems, drinking wine...give me something to look up.