Acute Treatment of Migraine With e-TNS

Inclusion Criteria: * History of episodic or chronic migraine with or without aura meeting the diagnostic criteria listed in ICHD-III beta (2013) section 1, migraine, with the exception of ''complicated migraine'' (i.e., hemiplegic migraine, basilar-type migraine, ophthalmoplegic migraine, migrainous infarction) * Having a migraine attack lasting at least 3 hours * Migraine pain intensity stabilized for at least 1 hour * Frontal, retro-, or peri- orbital headache. Exclusion Criteria: * Pregnant women * Patients having received Botox treatment in the prior 4 months * Patients having received supraorbital nerve blocks in the prior 4 months * Diagnosis of other primary or secondary headache disorders, except of Medication Overuse Headache * Patients with only temporal or occipital headache * Patients using opioid medication * Patients having taken abortive migraine medication in the prior 3 hours * Allodynia: intolerance to supraorbital neurostimulation (allodynia) that makes the treatment not applicable (the patients will be excluded if they are unable to tolerate the first 5 minutes of neurostimulation). * Implanted metal or electrical devices in the head * Cardiac pacemaker or implanted or wearable defibrillator * Patient having had a previous experience with Cefaly®