About this trial
This study aims to determine differences in experimental pain and sex hormone levels between patients with migraine, patients with endometriosis, patients with migraine and endometriosis, and healthy controls. Participants will complete surveys, experimental pain paradigms and collection of samples for hormone analyses.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Patients with diagnosed endometriosis, migraine, or both endometriosis and migraine
Healthy control subjects with no history of chronic pain
Age 12-45
Assigned female sex at birth
Disqualifiers
Pregnancy or breastfeeding
Presence of prolactinoma
Presence of psychiatric, neurological, endocrinological and/or developmental conditions and taking medications for these conditions
Current use of dopamine agonist or SSRI medications
Trial population
participants with migraine OR with endometriosis OR with migraine and endometriosis OR with no chronic pain condition
Trial design
Case-control
Prospective
Treatments tested in this trial
Thermal stimuli
DeviceThe Thermal Sensory Analyzer (TSA-II or PATHWAY platform - Medoc, Ramat Yishai, Israel) will be used to safely deliver heat and cold stimuli. These devices can deliver relatively complex stimuli via computer control. All targeted stimulus temperatures will be less than 50°C, and participants will be free to remove their arm or leg at any time from the thermode. Noxious cold stimuli will also be delivered with a plastic water container or a water bath (FISHER, USA). Participants will be free to pull out of the water bath at any time
Pressure stimuli
DevicePressure stimuli will be applied by using a handheld algometer (Wagner Instruments) or the Pressure Algometer (Medoc, Ramat Yishai, Israel). These devices have a round probe that allows quantifying the amount of pressure that is being applied. The Pressure Algometer allows a real-time visual feedback to control and monitor applied pressure rates. Pressure will be applied to the lower leg, volar forearm, or trapezius.
Pain ratings
BehavioralPain intensity and pain unpleasantness ratings will be assessed.
Conditioned pain modulation (CPM) response
BehavioralThe CPM paradigm assesses endogenous inhibitory pain modulation efficiency. CPM testing includes the application of a "test" stimulus without conditioning (control run, pressure pain thresholds) and a subsequent application of the same test stimulus together with a conditioning stimulus (conditioning run, a 60 second of foot immersion in cold water). The CPM response is the difference in the pressure pain thresholds between the control and the conditioning runs.
Hormonal assessment
Biological/VaccineBlood samples (approximately 2 tablespoons) and/or saliva and/or urine will be collected for analyses of sex hormone levels (e.g., prolactin, testosterone, estradiol).
Treatment groups
Trial outcomes
Primary outcomes
Conditioned pain modulation (CPM) response
This psychophysical test examine the inhibitory pain modulation efficiency. In this test, pressure pain thresholds (measures by kilopascal) are assessed before and during immersion of the foot in cold water.
Sex Hormones
prolactin levels
Sponsors and contacts
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