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The authors report long-term results of continuous hypothalamic stimulation in 16 chronic drug-refractory patients with cluster headache (CH). At a mean follow-up of 23 months, 13 patients are persistently pain-free or almost pain-free, and the other 3 are improved. There are no persistent side effects. Hypothalamic stimulation is an effective, safe, and well-tolerated alternative to surgery for chronic patients with drug-refractory CH.

Objective-To examine surgical findings and results of microvascular decompression (MVD) for trigeminal neuralgia (TN), including patients with multiple sclerosis, to bring new insight about the role of microvascular compression in the pathogenesis of the disorder and the role of MVD in its treatment. Methods-Between 1990 and 1998, 250 patients aVected by trigeminal neuralgia underwent MVD in the Department of Neurosurgery of the "Istituto Nazionale Neurologico C Besta" in Milan. Limiting the review to the period 1991-6, to exclude the "learning period" (the first 50 cases) and patients with less than 1 year follow up, surgical findings and results were critically analysed in 148 consecutive cases, including 10 patients with multiple sclerosis. Results-Vascular compression of the trigeminal nerve was found in all cases. The recurrence rate was 15.3% (follow up 1-7 years, mean 38 months). In five of 10 patients with multiple sclerosis an excellent result was achieved (follow up 12-39 months, mean 24 months). Patients with TN for more than 84 months did significantly worse than those with a shorter history (p<0.05). There was no mortality and most complications occurred in the learning period. Surgical complications were not related to age of the patients. Conclusions-Aetiopathogenesis of trigeminal neuralgia remains a mystery. These findings suggest a common neuromodulatory role of microvascular compression in both patients with or without multiple sclerosis rather than a direct causal role. MVD was found to be a safe and eVective procedure to relieve typical TN in patients of all ages. It should be proposed as first choice surgery to all patients aVected by TN, even in selected cases with multiple sclerosis, to give them the opportunity of pain relief without sensory deficits. and fully recognised and popularised by Jannetta 3 was a milestone in the management of medically intractable trigeminal neuralgia.In the past 30 years thousands of patients have undergone successful microvascular decompression and today it represents one of the most widely used surgical options for trigeminal neuralgia. Several studies agree on high rate of long term success and even authors against the concept of microvascular compression perform it for its eVectiveness. 4 Controversies still exist about the role of vascular compression in the pathogenesis of the disorder, the possible involvement of the same mechanism also in patients aVected by multiple sclerosis, the existence of reliable prognostic factors, and the role of microvascular decompression in elderly patients.To bring new insight about these topics we critically reviewed 250 patients, including 10 patients aVected by multiple sclerosis, all operated on by the same surgeon (GB). Patients and methodsBetween 1990 and 1998, 250 patients aVected by trigeminal neuralgia (TN) underwent microvascular decompression (MVD) in the Department of Neurosurgery of the "Istituto Nazionale Neurologico C. Besta" in Milan. Our review was limited to 146 patients treated in the period 19...

The medical treatment of patients with chronic primary headache syndromes (chronic migraine, chronic tension-type headache, chronic cluster headache, hemicrania continua) is challenging as serious side effects frequently complicate the course of medical treatment and some patients may be even medically intractable. When a definitive lack of responsiveness to conservative treatments is ascertained and medication overuse headache is excluded, neuromodulation options can be considered in selected cases.Here, the various invasive and non-invasive approaches, such as hypothalamic deep brain stimulation, occipital nerve stimulation, stimulation of sphenopalatine ganglion, cervical spinal cord stimulation, vagus nerve stimulation, transcranial direct current stimulation, repetitive transcranial magnetic stimulation, and transcutaneous electrical nerve stimulation are extensively published although proper RCT-based evidence is limited. The European Headache Federation herewith provides a consensus statement on the clinical use of neuromodulation in headache, based on theoretical background, clinical data, and side effect of each method. This international consensus further gives recommendations for future studies on these new approaches.In spite of a growing field of stimulation devices in headaches treatment, further controlled studies to validate, strengthen and disseminate the use of neurostimulation are clearly warranted. Consequently, until these data are available any neurostimulation device should only be used in patients with medically intractable syndromes from tertiary headache centers either as part of a valid study or have shown to be effective in such controlled studies with an acceptable side effect profile.

We report the results of deep brain stimulation (DBS) of the globus pallidus internus (GPi) in 12 patients with childhood-onset generalized dystonia refractory to medication, including 3 patients with status dystonicus. There were 8 patients who had DYT1-negative primary dystonia, 1 had DYT1-positive dystonia, and 3 had symptomatic dystonia. Stimulation was effective in all but 1 patient. Dystonic postures and movements of the axis and limbs responded to DBS to a greater extent than oromandibular dystonia and fixed dystonic postures. These findings provide further evidence that pallidal stimulation is an effective treatment for intractable childhood-onset dystonia, including status dystonicus, and together with previous findings, suggest that it should be considered the treatment of choice for these conditions.