Cryotherapy is a pain treatment that uses a method of localized freezing temperatures to deaden an irritated nerve. Cryotherapy is also used as a method of treating localized areas of some cancers (called cryosurgery), such as prostate cancer and to treat abnormal skin cells by dermatologists. In this article we only discuss its use in nerve conditions. In cryotherapy, a probe is inserted into the tissue next to the affected nerve. The temperature of the probe drops to then effectively freeze the nerve. The freezing inactivates the nerve and, as a result, painful nerve irritation is relieved.