In dermatology, electrocautery is done with a device which uses electricity, delivering it to the skin via a needle-like top to burn closed or remove harmful or unwanted tissue from the skin. As the patient, you will not feel the electricity nor will it enter the body at all, the treatment will only affect the area that is touched by the device. This treatment is safe, effective, and fairly simple, although those who have pacemakers and similar devices in the body should always alert their doctor.