Self-administered, noninvasive vagus nerve stimulation (nVNS) using the gammaCore (electroCore) device is a safe, tolerable and potentially effective treatment option for the prevention of chronic migraine attacks, according to a 59-patient multicenter study (Neurology 2016;87:529-538).
The mechanism of nVNS provides some of the same benefits as deep breathing, yoga or meditation. The gammaCore device delivers low-voltage electrical stimulation (peak of 24 V, max current of 60 mA) to the neck in