Cautery and cold cautery

Skin cautery uses a heated electrode to destroy skin tissue. As the technique also targets normal tissue, it can cause scarring.

Cold cautery, or cryosurgery, is the application of extreme cold to destroy skin tissue. Liquid nitrogen is most commonly used as the cooling solution and is applied to the skin lesion. This treatment has minimal pain and scarring; however, there is a risk of nerve damage to surrounding healthy tissue.