the rash in the picture is much darker than my son's. His is light pink and more scattered. In looking again at the one's on his ankle, they are definite circles. I am at a loss. I co-worker suggested Fifth's, but face and cheeks are not affected. As stated earlier, he has no fever, no itching, about 50% of the rash is slightly raised the rest is simply the discoloration. He's been around no-one contagious that we know of. I leaned toward the ringworm, as we have two outdoor cats that he won't leave alone. They show no symptoms and my son's rash is not behaving like ringworm. It happened so fast that I immediately thought of an allergic reaction, but there was no itching. It seemed to move too fast to be fungal, which left viral, but I can't place it. The rings on the feet and ankle seem familiar, though, as if I've seen them before. I've been researching ALL day.