Occipital nerve stimulation improves the quality of life in medically-intractable chronic cluster headache: Results of an observational prospective study; Fontaine D, Blond S, Lucas C, Regis J, Donnet A, Derrey S, Guegan-Massardier E, Jarraya B, Dang-Vu B, Bourdain F, Valade D, Roos C, Creach C, Chabardes S, Giraud P, Voirin J, Bloch J, Rocca A, Colnat-Coulbois S, Caire F, Roger C, Romettino S, Lanteri-Minet M; Cephalalgia (Oct 2016)BACKGROUND Occipital nerve stimulation (ONS) has been proposed to treat chronic medically-intractable cluster headache (iCCH) in small series of cases without evaluation of its functional and emotional impacts.
METHODS We report the multidimensional outcome of a large observational study of iCCH patients, treated by ONS within a nationwide multidisciplinary network (https://clinicaltrials.gov NCT01842763), with a one-year follow-up. Prospective evaluation was performed before surgery, then three and 12 months after.
RESULTS One year after ONS, the attack frequency per week was decreased>30% in 64% and>50% in 59% of the 44 patients. Mean (Standard Deviation) weekly attack frequency decreased from 21.5 (16.3) to 10.7 (13.8) (p = 0.0002). About 70% of the patients responded to ONS, 47.8% being excellent responders. Prophylactic treatments could be decreased in 40% of patients. Functional (HIT-6 and MIDAS scales) and emotional (HAD scale) impacts were significantly improved, as well as the health-related quality of life (EQ-5D). The mean (SD) EQ-5D visual analogic scale score increased from 35.2 (23.6) to 51.9 (25.7) (p = 0.0037). Surgical minor complications were observed in 33% of the patients.
CONCLUSION ONS significantly reduced the attack frequency per week, as well as the functional and emotional headache impacts in iCCH patients, and dramatically improved the health-related quality of life of responders.