Treatment of intractable chronic cluster headache by occipital nerve stimulation: a cohort of 51 patients.

BACKGROUND AND PURPOSE: Chronic cluster headache is a rare, highly disabling primary headache condition. When medically intractable, occipital nerve stimulation can offer effective treatment. Open-label series have provided data on small cohorts only. METHODS: We analyzed 51 subjects to evaluate the long-term outcomes of highly intractable chronic cluster headache with occipital nerve stimulation. Patients with intractable chronic cluster headache were implanted with occipital nerve stimulators during the period 2007-2014. The primary endpoint was improvement in daily attack frequency. Secondary endpoints included attack severity, attack duration, quality-of-life measures, headache disability scores and adverse events. RESULTS: We studied 51 patients [35 males; mean age at implant 47.78 (range 31-70) years; mean follow-up 39.17 (range 2-81) months]. Nineteen patients had other chronic headache types in addition in chronic cluster headache. At final follow-up, there was a 46.1% improvement in attack frequency (P < 0001) across all patients, 49.5% (P < 0.001) in those with cluster headache alone and 40.3% (P = 0.036) in those with multiple phenotypes. There were no significant differences in response in those with or without multiple headache types. The overall response rate (defined as at least a 50% improvement in attack frequency) was 52.9%. Significant reductions were also seen in attack duration and severity. Improvements were noted in headache disability scores and quality-of-life measures. Triptan use of responders dropped by 62.56%, resulting in significant cost savings. Adverse event rates were highly favorable. CONCLUSION: Occipital nerve stimulation appears to be a safe and efficacious treatment for highly intractable chronic cluster headache even after a mean follow-up of over 3 years.

Aggressiveness in different presentations of cluster headache: results from a controlled multicentric study.

BACKGROUND: The hypothalamus has been discussed as a pivotal structure for both cluster headache (CH) and aggressiveness, but little is known about the extent of self-reported aggressiveness in patients with CH. PATIENTS AND METHODS: Twenty-six patients with chronic, 25 with active episodic and 22 with episodic CH outside the active period were examined interictally with a validated questionnaire quantifying factors of aggression and compared with 24 migraine patients and 31 headache-free volunteers. RESULTS: The ANOVA was significant for the subscale 'self-aggression/depression' (F(4, 123) = 5.771, p < 0.001) with significant differences between chronic and episodic CH and healthy volunteers. No significant changes were found for other subscales and the sum scale (F(4, 123) < 1.421, p > 0.230). Especially in the clinically most affected group of patients (chronic CH and active episodic CH), high levels of "self-aggression/depression" correlate with higher prevalence of depressive symptoms and higher impairment measured on an emotional and functional level. DISCUSSION: Self-aggressive and depressive cognitions with highest scores in chronic CH seem to be reactive as they correlate with depressive symptoms and impairment. They should be considered as an important therapeutic target since they impair the patient's life significantly.

Human hypothalamus shows differential responses to basic motivational stimuli--an invasive electrophysiology study.

The hypothalamus supports basic motivational behaviours such as mating and feeding. Recording directly from the posterior inferior hypothalamus in a male patient receiving a deep brain stimulation (DBS) electrode for the alleviation of cluster headache, we tested the hypothalamic response to different classes of motivational stimuli (sexually relevant: pictures of dressed and undressed women; pictures of food) and pictures of common objects as control. Averaged local field potentials (LFP) to sexually relevant stimuli were characterized by a biphasic significantly enhanced response (relative to objects; bootstrapping statistics) with a first phase starting at around 200 ms and a second phase peaking at around 600 ms. Sexually relevant stimuli also showed a greatly enhanced positivity relative to other stimulus classes in surface event-related potentials in a group of 11 male control participants. It is suggested that the hypothalamus is involved in the recruitment of attentional resources by sexually relevant stimuli reflected in this surface positivity. In a second session, the response to food stimuli relative to objects was tested in two states: after fasting for 14 h, LFPs to food and object stimuli showed significant differences in between 300 and 850 ms, which disappeared after a full high-calorie meal, thus replicating classic studies in monkeys [Rolls et al., Brain Res (1976) 111:53-66]. The current data are the first to demonstrate hypothalamic responses to the sight of motivational stimuli in man and thus shows that recording from DBS electrodes might provide important information about the cognitive functions of subcortical structures.

Mode of occurrence of traumatic head injuries in male patients with cluster headache or migraine: Is there a connection with lifestyle?

INTRODUCTION: Our study objective was to investigate the mode of occurrence of traumatic head injury in episodic cluster headache and migraine patients. METHODS: We conducted a retrospective study on 400 male patients, 200 with cluster headache (cases) and 200 with migraine (controls). We investigated the frequency and mode of occurrence of traumatic head injury and some lifestyle habits. RESULTS: The number of traumatic head injuries was significantly higher in cases than in controls (adjusted odds ratio [OR] = 2.0; 95% confidence interval [CI] = 1.5-2.8). Cases were more often responsible for the head traumas (adjusted OR = 2.6; 95% CI = 1.3-4.9) and reported a significantly higher proportion of injuries during scuffles or brawls (OR = 6.5; 95% CI = 2.9-14.8). Compared with other cluster headache patients, cases responsible for traumatic head injuries were more frequently heavy alcohol (p = .000), heavy tobacco (p = .03) and heavy coffee consumers (p = .003). CONCLUSIONS: Cluster headache patients (a) had traumatic head injuries more frequently than migraineurs; and (b) were more often responsible for them, perhaps due to particular behaviours related to their lifestyles.

Safety and efficacy of deep brain stimulation in refractory cluster headache: a randomized placebo-controlled double-blind trial followed by a 1-year open extension.

Chronic cluster headache (CCH) is a disabling primary headache, considering the severity and frequency of pain attacks. Deep brain stimulation (DBS) has been used to treat severe refractory CCH, but assessment of its efficacy has been limited to open studies. We performed a prospective crossover, double-blind, multicenter study assessing the efficacy and safety of unilateral hypothalamic DBS in 11 patients with severe refractory CCH. The randomized phase compared active and sham stimulation during 1-month periods, and was followed by a 1-year open phase. The severity of CCH was assessed by the weekly attacks frequency (primary outcome), pain intensity,sumatriptan injections, emotional impact (HAD) and quality of life (SF12). Tolerance was assessed by active surveillance of behavior, homeostatic and hormonal functions.During the randomized phase, no significant change in primary and secondary outcome measures was observed between active and sham stimulation. At the end of the open phase, 6/11 responded to the chronic stimulation(weekly frequency of attacks decrease [50%), including three pain-free patients. There were three serious adverse events, including subcutaneous infection, transient loss of consciousness and micturition syncopes. No significant change in hormonal functions or electrolytic balance was observed. Randomized phase findings of this study did not support the efficacy of DBS in refractory CCH, but open phase findings suggested long-term efficacy in more than 50% patients, confirming previous data, without high morbidity. Discrepancy between these findings justifies additional controlled studies (clinicaltrials.gov number NCT00662935).

Behavioral treatment of chronic cluster headache in a geriatric patient.

While nonpharmacological treatment of migraine and tension headache has increasingly been demonstrated to be efficacious, relatively little attention has been focused upon treatment of the more severe cluster headache. This has particularly been the case for the type of cluster headache known as chronic cluster. The present case study focused upon the treatment of a 69-year-old male with a 37-year history of headache activity. The description of headache matched those criteria currently considered to be indicative of chronic cluster headache. Following 6 weeks of baseline, during which daily ratings of head pain and daily ingestion of "as needed" (PRN) pain medication were collected, a 7-week treatment phase was implemented. Treatment consisted of thermal biofeedback coupled with a spouse contingency program (i.e., directing the spouse to avoid consequating subject reports of head pain). During the treatment phase, a near-100% reduction in amount of weekly PRN pain medication ingested was noted, along with a decrease in self-reports of head pain. Both of these decreases were maintained at 1-month, 4-month, and 15-month follow-ups. Implications for treatment of chronic cluster headache were discussed.