I have a mole on my back and I tried to freeze it off. The skin around the mole turned a dark brown color. Why? (Photo)

Hello martinkam, Thanks for your question. Based on your photo it appears the skin around the mole was also treated with the freezing compound.  Think of it as collateral damage from the thermal freezing. The "normal" skin has responded to the damage by turning darker.  This can happen after burns (hot or cold).Local wound care with ointments and keeping the wound moist should help. In the future I would recommend seeking out a professional to help you with these types of lesions especially those in the hard to reach spots. If the brown persists down the road there are topical lightening creams to help take the dark brown away.Hope this helps. Dr. Shadfar