Fig. 1From: Preventive therapy with galcanezumab for two consecutive cluster bouts in patients with episodic cluster headache: an observational multicenter studySelection of patients with cluster headache. PGI-I; Patients Global impression of improvement. * Causes of not receiving galcanezumab therapy for their cluster bout were poor efficacy or prefer other treatment in 5 patients and economic burden in 1 patientBack to article page