The procedure involves an injection of a local anesthetic-steroid mixture in proximity to the injured nerve, decreasing the transmission of pain signals to and along the nerve. In some cases, involving sensory nerves, temperature-based therapy such as cryotherapy or radiofrequency lesioning may be used as a long-term pain solution. Terminal cases can call for substances such as phenol and alcohol to be utilized, providing long-term relief. While any complication from this procedure is rare, there may be a risk of infection, bruising, or damage to the nerve. After the injection, any soreness can be managed by applying ice for 20 minutes two to three times a day. If you have any concerns, call Portland Pain and Spine immediately.