My son randomly had this rust colored circle appear on the side of his left foot December 5th. It just appeared out of no where. Didn't bother him. Flush on his skin. Wouldn't even know it was there if you couldn't see it. 9 days later another showed up on the back of his right foot. The next day the original circle rubbed off?! I had already tried wiping it, alcohol, bath soak, none worked. I took him to the doctor today and they told me they aren't sure what it is but they aren't concerned. Im just wondering if any of you have had the same thing. He's almost 3. Thank you