A Research Study To Compare Two Kinds Of Daily Headache
Public ClinicalTrials.gov record NCT00335803. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Comparison Of Subjects With New Daily Persistent Headache (NDPH) And Subjects With Transformed Migraine (TM)
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Chronic daily headache has been classified into several categories. One category is of sudden onset and is called New Daily Persistent Headache (NDPH). Another category of daily headache evolves gradually and is called Transformed Migraine (TM). This research study is being conducted to compare people with these two kinds of daily headache in order to improve our understanding of these conditions.
Study identification
- NCT ID
- NCT00335803
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 14 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 28, 2006
- Primary completion
- Not listed
- Completion
- Aug 31, 2007
- Last update posted
- Jan 22, 2009
2006 – 2007
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Jefferson Headache Center | Philadelphia | Pennsylvania | 19107 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00335803, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 22, 2009 · Synced Sep 13, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00335803 live on ClinicalTrials.gov.