Patients with a chief complaint of craniofacial pain (migraine, cluster headache, trigeminal autonomic cephalgia, sphenopalatine ganglioneuraligia, paroxysmal hemicrania) who has Stanford Pain \& ENT clinic visit
You may not be if
age \<18 or \>80
pregnant women
economically disadvantaged (not able to afford clinic visits/treatments)
decisionally impaired (unable to obtain informed consent)
has allergy to bupivacaine
unable or unwilling to participate plans to participate in another clinical study at any time during this study
