Spinal cord stimulation in cluster headache.

Neurostimulation techniques for the treatment of primary headache syndromes, particularly for chronic cluster headache (CCH), have received much interest in the recent years. Occipital nerve stimulation (ONS) has yielded favourable clinical results, and is becoming a routine treatment for refractory chronic cluster headache in specialized centres. Meanwhile, other promising techniques, such as spinal cord stimulation (SCS) or sphenopalatine ganglion stimulation, are emerging. This article reviews the current state of clinical research for neurostimulation techniques for chronic cluster headache, and particularly the pros and cons of SCS and ONS.