For over a year now, I have a mole on my back that has a circle around it now. It looks to be almost a perfect circle of white skin with the mole being in the middle of it. When it first appeared, that mole constantly itched and I believe I was scratching it a little too much. Does this sound like a possible cancer or something else? A friend said it sounded either like a skin repellant (I know I'm not spelling this right...where you have white spots of skin) or a fungus. Can anyone help?