Cryotherapy can be used for various clinical conditions e.g., warts.
It is a method that uses extremely cold liquid, liquid nitrogen, which has a temperature of -196°C, to freeze and destroy skin cells that need removal.
Cryotherapy does sting and may be slightly painful at the time of the procedure and for a short time afterwards. The amount of discomfort varies a great deal from person to person. The procedure does not require anaesthesia, as freezing itself has considerable local anaesthetic effect.