Editing Cluster headache (section)

===Surgery===
Nerve stimulators may be an option in the small number of people who do not improve with medications.<ref>{{cite book |doi=10.1159/000323045 |pmid=21422783 |chapter=Peripheral Nerve Stimulation in Chronic Cluster Headache |title=Peripheral Nerve Stimulation |volume=24 |pages=126–32 |series=Progress in Neurological Surgery |year=2011 |last1=Magis |first1=Delphine |last2=Schoenen |first2=Jean |isbn=978-3-8055-9489-9 }}</ref><ref name=EU2013>{{cite journal |doi=10.1186/1129-2377-14-86 |title=Neuromodulation of chronic headaches: Position statement from the European Headache Federation |journal=[[The Journal of Headache and Pain]] |volume=14 |year=2013 |last1=Martelletti |first1=Paolo |last2=Jensen |first2=Rigmor H |last3=Antal |first3=Andrea |last4=Arcioni |first4=Roberto |last5=Brighina |first5=Filippo |last6=De Tommaso |first6=Marina |last7=Franzini |first7=Angelo |last8=Fontaine |first8=Denys |last9=Heiland |first9=Max |last10=Jürgens |first10=Tim P |last11=Leone |first11=Massimo |last12=Magis |first12=Delphine |last13=Paemeleire |first13=Koen |last14=Palmisani |first14=Stefano |last15=Paulus |first15=Walter |last16=May |first16=Arne |issue=1 |page=86 |pmc=4231359 |pmid=24144382 |doi-access=free }}</ref> Two procedures, [[deep brain stimulation]] or [[occipital nerve stimulation]], may be useful;<ref name=AFP2013/> early experience shows a benefit in about 60% of cases.<ref>{{cite journal |doi=10.1097/wco.0b013e32832ae61e |pmid=19434793 |title=Neurostimulation approaches to primary headache disorders |journal=Current Opinion in Neurology |volume=22 |issue=3 |pages=262–8 |year=2009 |last1=Bartsch |first1=Thorsten |last2=Paemeleire |first2=Koen |last3=Goadsby |first3=Peter J |s2cid=2063863 }}</ref> It typically takes weeks or months for this benefit to appear.<ref name=EU2013/> A non-invasive method using [[transcutaneous electrical nerve stimulation]] (TENS) is being studied.<ref name=EU2013/>

A number of surgical procedures, such as a [[rhizotomy]] or [[microvascular decompression]], may also be considered,<ref name=EU2013/> but evidence to support them is limited and there are cases of people whose symptoms worsen after these procedures.<ref name=EU2013/>