Fig. 1From: Cluster headache attack remission with sphenopalatine ganglion stimulation: experiences in chronic cluster headache patients through 24 monthsRemission Periods per patient. periods of complete attack remission for the 10 patients experiencing remission. Data through the entire study period, from microstimulator insertion to the 24 month study visit are provided. X’s indicate first use of stimulator. Squares indicate 24 month study visitBack to article page