Aug 3, 2018 Calcitonin Gene-Related Peptide Provokes Cluster Headache Attacks Calcitonin Gene-Related Peptide Provokes Cluster Headache Attacks... episodic cluster headache but did not do so in remission-phase episodic cluster headache, according to a study published in JAMA Neurology. ... read morePublished on 2018-08-03