My husband has a skin lesion on his left arm, just above the wrist bone. It has grown from a pimple size (his words) to about dime size (red, kind of rough looking) when I noticed it a couple of weeks ago to now a raised, round kind of bulls-eye looking thing. He has a dermatology appointment, but not for a couple of weeks yet. Says he didn t injure it, no bug bites he remembers.