Active clinical trials for "Cluster Headache"

This is a research study examining cutaneous allodynia and cluster headaches. Cutaneous allodynia means the feeling of pain or unpleasant sensation when normally non-painful stimuli (e.g. light touch) are applied to the skin. Many studies have been performed looking at the presence of cutaneous allodynia in patients with migraines; however, few studies have examined it in cluster headache patients. There is still much to be learned about the brain and how it functions if the investigators are to understand the underlying causes of cluster headache. It is important to explore cutaneous allodynia in cluster headache as it may help guide physicians with the care of these individuals. Sixty patients will be screened for this study. Thomas Jefferson University is the only center enrolling patients in this research study.

The occipital nerve stimulation (ONS) is used to treat patients with refractory primary chronic headache but its mechanism of action (MoA) remains unknown. Different hypothesis have been suggested in particular a specific action on cerebral generators involved in different types of primary headaches or a non specific action on pain modulatory network. The aim of this study, using the chronic cluster headache as a model, is to determine the changes in cerebral metabolism induced by ONS to precise its MoA in the treatment of primary chronic headache.

Monitor the safety and performance of the Pulsante Microstimulator System.

Cluster headache is a syndrome characterized by disabling headache and accompanying autonomic symptoms. Despite cluster headache is called "suicide headache", its natural history has not been well investigated. The investigators aimed to investigate its disease course, overall prognosis, and treatment pattern in retrospective cohort.

Cluster headache attacks do not occur randomly throughout the day, but have a clear circadian rhythmicity. The aim of this study is to investigate circadian changes of the brain, the autonomic nervous system and pain processing systems.