I have a red spot on my leg, it showed up the other day, it is a tiny scab, and has now turned very red. It only hurts when I touch it. It doesn t itch. I have used cortizone on it and that kind of burned. The part that has scabbed is at the top, and the rest of it is a small circle, smaller than the size of a dime. Antibiotic doesn t bother it. We do live out in the country. Could it be a spider bite? It looks like a ring, but not like ringworm, the outer skin is kind of dry now.