What is Cluster Headache? (Definition)
(Symptoms, Causes & Treatment)
According to the U.S. National Library of Medicine, A cluster headache is a type of headache. It is one-sided head pain that may involve tearing of the eyes, a droopy eyelid, and a stuffy nose. Attacks occur regularly for 1 week to 1 year. The attacks are separated by pain-free periods that last at least 1 month or longer.
Cluster headaches belong to a group of primary headache disorders, classified as the trigeminal autonomic cephalalgias or (TACs). Cluster headache is named after the demonstrated grouping of headache attacks occurring together or in a cluster. People typically experience repeated attacks of excruciatingly severe unilateral headache pain.
Doctors do not know exactly what causes cluster headaches. They seem to be related to the body’s sudden release of histamine (chemical in the body released during an allergic response) or serotonin (chemical made by nerve cells). A problem in a small area at the base of the brain called the hypothalamus may be involved.
See below for updated news and information regarding Cluster Headaches including new medical research, treatment options and advancements.
Latest Cluster Headache Research – Treatment News, Discoveries and Findings
Clinical Resources: Treatment Therapies & Guidelines
Clinical Trials – Investigational Therapies
For information on current clinical trials, visit www.clinicaltrials.gov. This is a searchable registry and results database of federally and privately supported clinical trials taking place in the U.S and abroad. ClinicalTrials.gov provides information about a trial’s purpose, who may participate, locations, and phone numbers. This information should be used in conjunction with advice from health care professionals.
For information about clinical trials being conducted at the National Institutes of Health (NIH) Clinical Center in Bethesda, MD, contact the NIH Patient Recruitment Office:
Toll Free: (800) 411-1222
TTY: (866) 411-1010
For information about clinical trials conducted in Europe, visit: https://www.clinicaltrialsregister.eu/ctr-search/search
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