60 (sixty) patients (the experimental Celestone group) undergoing pulsed radiofrequency treatment will receive transforaminal epidural injection of the solution of 1 cc of Lidocaine 1% with 1 cc of Celestone Chronodose around each dorsal root ganglion immediately after the radiofrequency treatment has been performed. 60 (sixty) patients (the control group) undergoing pulsed radiofrequency treatment will receive transforaminal epidural injection of the solution of 1 cc of Lidocaine 1% with 1 cc of normal saline around each dorsal root ganglion immediately after the radiofrequency treatment will be performed.