About 8 months ago, I noticed an indentation on my arm that looks like a large chicken pox scar (which it isn t). It is colorless, about the size of a pencil eraser. It doesn t hurt but it looks like it is getting a little larger. I see NOTHING about anything but 3 dimentional moles, shiny red moles, white, crusty moles, discolored patches that have odd boarders but nothing about this. Can you shed some light on it? Thank you