Comorbidity Between Attention Deficit Hyperactivity Disorder and Fibromyalgia (NCT07443800) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Comorbidity Between Attention Deficit Hyperactivity Disorder and Fibromyalgia
100 participantsStarted 2026-07-01
Plain-language summary
The overall objective of the research project presented here is to assess the prevalence of fibromyalgia in patients being treated for ADHD, the prevalence of ADHD in patients being treated for fibromyalgia, and the neurobiological correlates of ADHD-fibromyalgia comorbidity.
Who can participate
Age range
18 Years – 100 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
For patients with fibromyalgia :
* Men or women aged 18 or over
* Diagnosis of fibromyalgia
* Affiliated with a social security scheme
* Having signed an informed consent form
For patients with ADHD treated with methylphenidate
* Men or women aged 18 or over
* ADHD diagnosis
* Current treatment with extended-release methylphenidate for at least 1 month, with stable dosage for at least 2 weeks
* Affiliated with a social security scheme
* Having signed an informed consent form
For patients with ADHD but not treated with methylphenidate
* Men or women aged 18 or over
* ADHD diagnosis
* Affiliated with a social security scheme
* Having signed an informed consent form
Exclusion Criteria:
* For patients with fibromyalgia: existence of another condition explaining chronic pain
* Severe cognitive impairment
* Difficulties in understanding self-administered questionnaires
* Difficulties in assessing pain intensity
* Acute psychiatric disorder impacting the validity of self-report questionnaire data collection
* Inability to take biological samples
* Persons covered by Articles L1121-5 to L1121-8 of the CSP (corresponding to all protected persons: pregnant women, women in labor, nursing mothers, persons deprived of their liberty by judicial or administrative decision, minors, persons subject to legal protection measures: guardianship or curatorship).
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Percentage of patients with fibromyalgia among patients with ADHD and no prior methylphenidate treatment