Cryotherapy

Treatment
Cryotherapy is a procedure with liquid nitrogen that destroys the top layer of skin by freezing. Cryotherapy is used by dermatologists to treat actinic keratoses and warts. 

Cautery

Introduction
Curettage and cautery (electrosurgery) is a procedure in which your dermatologist scrapes off a skin lesion and applies heat to the skin surface. 

Cryosurgery 

Treatment
Cryosurgery is a surgical technique that uses liquid nitrogen to freeze the skin.