I have two questions. About a week and a half ago, an itchy red bump appeared on my wrist. I scratched it a little, but didn t think much of it. Now it s grown to about the size of a nickel and it still very itchy. It s a little swollen, and consists of a bunch of raised, little bumps. Is this just an allergic reaction to a bug bite or something else? The second thing is that I have an oval on my chin about an inch long. The edges are raised and it s extremely flaky and red. I originally thought maybe ringworm, but the center of the spot isn t clear. It has a mild itch. I have been using 3% hydrogen peroxide to clean both areas and have been putting lotion on them.