35 male, good health, non-smoker, have had a small, flat red birthmark on back of hand
since, well, birth. About 6 weeks ago, noticed a raised bump
in the area, it itched a bit, I put cortisone on it, no effect, and then I realized, after a few days, that it was going to stick around. Thought it might be an ingrown hair, but GP said no, suggested it might be a local irritation that got infected, healed, but scarred over with some inflammation.