It wouldnt hurt to go see a doc and voice your concern then...Although without other symptoms it would be extremely unlikely to be anything. Just ask the doc to run a Complete blood count and it would tell if anything is amiss in terms of leukemia and what not. More than likely this is just some skin issues, and probably superficial at that. My sister had childhood leukemia, and I can tell you one thing there were very obvious signs that something was wrong. She was very pale, very tired ALL the time...like she couldnt even get up in the morning and wouldnt play or anything. When they took her blood, it came out PINK, and the doctors looked at her results and immediately knew something was wrong.