Cryotherapy or cryosurgery is a basic technique of interventional dermatology in which, through a device that causes cooling at very low temperatures, unwanted skin lesions are destroyed.
It is used to treat mainly benign and pre-cancerous lesions or even skin cancers where surgical treatment is contraindicated.
Characteristic examples of lesions that can be treated with cryosurgery are papillomas, warts, keloids, actinic hyperkeratosis, basal cell carcinoma, etc.
The application is done by spraying the lesion with cold nitrogen, and a full treatment will probably take two or three cycles, depending on the case (intervals of a few weeks).
