Temporal changes of circadian rhythmicity in cluster headache

Objective To investigate the temporal changes of circadian rhythmicity in relation to the disease course in patients with cluster headache. Methods In this multicenter study, patients with cluster headache were recruited between September 2016 and July 2018. We evaluated the patients for circadian rhythmicity and time of cluster headache attacks in the current bout and any experience of bout-to-bout change in circadian rhythmicity. We analyzed...