NCT04217616

Brief Summary

Headaches are extremely common illnesses with a combined lifetime prevalence of 90-99% in Europe. Despite this high prevalence, there are persons who have never, in their whole life, encountered a headache. The aim of the study is to identify factors that protect against headache by studying pain perception, muscle tenderness and pain tolerance in people who never have had a headache (headache resistant) versus non-resistant controls. The investigators hope to contribute with novelty to the current understanding of headache pathophysiology and development of more efficient treatment of headache. The investigator examining: Quantitative sensory testing (cold pain threshold and heat pain threshold), Muscle tenderness (total tenderness score) and cold pressor test (time in the water and pain rating). All tests are performed the same day, by one investigator who are blinded to the grouping of the participants.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
100

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Oct 2019

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2019

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

January 2, 2020

Completed
1 day until next milestone

First Posted

Study publicly available on registry

January 3, 2020

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 12, 2020

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 12, 2020

Completed
Last Updated

March 25, 2021

Status Verified

March 1, 2021

Enrollment Period

5 months

First QC Date

January 2, 2020

Last Update Submit

March 24, 2021

Conditions

Keywords

HeadacheHealthyMuscle Tendernessquantitative sensory testingcold pain thresholdheat pain thresholdTotal Tenderness ScoreCold Pressor TestHeadache Resistant

Outcome Measures

Primary Outcomes (3)

  • Quantitative Sensory Test: Cold Pain Threshold

    Difference in Cold Pain Threshold (celcius) between cases and controls.

    3 hours

  • Quantitative Sensory Test: Heat Pain Threshold

    Difference in Heat Pain Threshold (celcius) between cases and controls.

    3 hours.

  • Pericranial Muscle Tenderness: Total Tenderness Scores

    Difference in Total Tenderness Score between cases and controls. 8 pericranial muscles are palpated by the investigator and the tenderness is rated by the participant on a scale of 0-3 where 0 is no tenderness and 3 is severe tenderness.

    3 hours

Secondary Outcomes (2)

  • Cold Pressor Test: Pain Tolerance

    3 hours

  • Cold Pressor Test: Pain Rating

    3 hours

Study Arms (2)

Headache Resistant Participants

Male participants who have never had a headache.

Non-Resistant Participants

Male participants who have experienced headache. Age matched.

Eligibility Criteria

Age18 Years - 70 Years
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

50 Headache resistant and 50 non-resistant male participants from the Danish Blood Donor Study.

You may qualify if:

  • Headache resistant and non-resistant male participants from the Danish Blood Donor Study.
  • Weight: 45 kg to 95 kg

You may not qualify if:

  • Daily consumption of any medication.
  • Consumption of any medication less than 12 hours prior to the study day.
  • Headache on the study day or 48 hours prior to the study day.
  • Amnestic or clinical signs of hypertension (systolic blood pressure \>150 mmHg and/or diastolic blood pressure \>100 mmHg) or hypotension (systolic blood pressure \<90 mmHg and/or diastolic blood pressure \<50 mmHg).
  • Any severe cardiovascular disease, including cerebrovascular illness.
  • Amnestic or clinical signs of current mental illness.
  • Amnestic or clinical signs of current substance or drug abuse.
  • Amnestic or clinical signs of any illness the responsible doctor considers relevant for participation in the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Danish Headache Center

Glostrup Municipality, Region H, 2600, Denmark

Location

Related Publications (1)

  • Olofsson IA, Hvedstrup J, Falkenberg K, Chalmer MA, Schytz HW, Pedersen MB, Ullum H, Pedersen OB, Olesen J, Hansen TF. Pain sensitivity in men who have never experienced a headache: an observer blinded case control study. J Headache Pain. 2021 Nov 8;22(1):134. doi: 10.1186/s10194-021-01345-0.

MeSH Terms

Conditions

HeadacheMyalgia

Condition Hierarchy (Ancestors)

PainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsMuscular DiseasesMusculoskeletal DiseasesNeuromuscular DiseasesNervous System DiseasesMusculoskeletal Pain

Study Officials

  • Jes Olesen, Professor

    Danish Headache Center

    STUDY DIRECTOR

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Medical Doctor, PhD student

Study Record Dates

First Submitted

January 2, 2020

First Posted

January 3, 2020

Study Start

October 1, 2019

Primary Completion

March 12, 2020

Study Completion

March 12, 2020

Last Updated

March 25, 2021

Record last verified: 2021-03

Locations