Changes in Acute Medication Cost Observed in Cluster Headache Patients Treated with Sphenopalatine Ganglion (SPG) Stimulation: A UK NHS-Specific Analysis Based on Data from the Pathway R1 Registry

On-demand stimulation of the sphenopalatine ganglion (SPG) by means of an implantable neurostimulation system has been shown to be a safe and clinically promising therapy for the treatment of chronic cluster headache