Massive study aims to unlock secrets of debilitating head pain
NCT ID NCT02910323
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is gathering information from 1,500 people with cluster headache or trigeminal neuralgia to learn more about these painful conditions. Researchers will collect surveys, genetic samples, and other health data. The goal is to better understand what causes these headaches and how to improve future treatments. No experimental treatments are being tested.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 1,500 people
The number the study aims to enrol. It can still change while the study runs.
- Start date
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Jul 2016
- Expected to finish
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Dec 2035
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Cluster Headache and Trigeminal Neuralgia patients, family members and healthy volunteers
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Diagnosis of a trigeminal autonomic cephalalgia according to the International Headache Classification including episodic cluster headache, chronic cluster headache, episodic paroxysmal hemicrania, chronic paroxysmal hemicrania, episodic short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT), chronic SUNCT, episodic short-lasting unilateral neuralgiform headache attacks with cranial autonomic symptoms (SUNA), chronic SUNA, and hemicrania continua. OR Diagnosis of a trigeminal neuralgia according to the International Headache Classification, including classical trigeminal neuralgia and symptomatic trigeminal neuralgia. * Able to provide HIPAA authorization to share prior medical records/imaging. Exclusion Criteria: * Life expectancy less than 1 year, co-existing disease or other characteristic that precludes appropriate diagnosis of a trigeminal autonomic cephalalgia or trigeminal neuralgia. * Active drug or alcohol use or dependence that, in the opinion of the site investigator, would interfere with adherence to study requirements * Inability or unwillingness of subject or legal guardian/representative to give informed consent. Inclusion Criteria for Healthy Volunteers: * Inclusion criteria is willingness to consent and be of age 18 and older
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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The University of Texas Health Science Center at Houston
RECRUITINGHouston, Texas, 77030, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can an IV Anti-Seizure drug calm the lightning bolts of trigeminal neuralgia?
- Surgery targets hidden nerve tethering in trigeminal neuralgia
- 800 patients, 3 years: mapping the mystery of rare headache attacks
- Can freezing a nerve silence the 'Suicide Disease'?
- Can a mineral ease severe headaches faster than standard painkillers?
- Nasal spray could offer rapid relief for debilitating cluster headaches