Pulsed radiofrequency of C2 dorsal root ganglion under ultrasound guidance for chronic migraine: a case report

Jun Li,1,* Yan Yin,1,* Ling Ye,1 Yunxia Zuo2 1Department of Pain Management, West China Hospital, Sichuan University, Chengdu, Sichuan Province 610041, People’s Republic of China; 2Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province 610041, People’s Republic of China *These authors contributed equally to this work Abstract: Chronic migraine is common but difficult to treat. Most patients respond poorly to drugs. Occipital nerve block such as stellate ganglion block is an effective treatment without continuous effect for migraine. Pulsed radiofrequency (PRF) technique has been shown to be effective in relieving headache and prolonging the effect of nerve block. This case report is about a patient who suffered from chronic migraine with occipital pain and was successfully treated with PRF of C2 (axis) dorsal root ganglion (DRG) under ultrasound guidance confirmed by computed tomograpy scan. The patient did not feel headache after 1-year follow-up. This suggests that C2 DRG PRF might be considered as an alternative treatment for chronic migraine with occipital pain. Keywords: migraine, chronic facial pain syndrome, ultrasound guidance, pulsed radiofrequency, dorsal root ganglio