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Attacks of cluster headache (CH) are, arguably, the worst recurrent pain phenomenon known. The usual mainstay of preventive medication for episodic CH is a diminishing course of oral corticosteroids, together with an escalating dose of verapamil. However, systemic corticosteroid administration is associated with well-known adverse effects, and verapamil often needs to be employed at high doses, necessitating close electrocardiographic monitoring during dose escalation to prevent cardiac arrhythmias (Neurology 2007; 69:668). Therefore, a simple, effective transitional preventive measure is needed to bridge the gap between attack onset and effective attack control by conventional preventive treatments. Manipulation of the greater occipital ne…