Raiofrequency lesioning is an outpatient procedure to treat pain, performed most frequently in a fluoroscopy room. Numbing medication is injected followed by a radiofrequency needle at the suspected pain site. After confirmation that the needle tip is positioned correctly, an electrode is inserted into the needle. The proper location is confirmed by fluoroscopy. Using electrical stimulation, the correct nerve is identified by the patient in response to a "tingling" or "buzzing" sensation. This sensation does not typically produce any pain.