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Clinical Trials/NCT07151274
NCT07151274RecruitingNot Applicable

Impact of Ehlers-Danlos Syndrome on Gynaecological Health: Focus on the Prevalence of Dysmenorrhoea

University Hospital, Rouen1 site in 1 country156 target enrollmentStarted: July 7, 2025Last updated:
Conditions

Trial Snapshot

Phase
Not Applicable
Status
Recruiting
Sponsor
Enrollment
156
Locations
1
Primary Endpoint
Assessment of the severity of dysmenorrhea by Numerical Pain Scale (NPS)

Study Overview

Brief Summary

Dysmenorrhea is a common problem in gynaecology, significantly impacting patients' quality of life. Ehlers-Danlos syndrome (EDS) is associated with joint hypermobility, tissue fragility and chronic pain. Some studies suggest an increased prevalence of gynaecological disorders, including dysmenorrhea, in patients with EDS. However, data remain limited and few studies have compared the intensity and characteristics of dysmenorrhea in women with EDS. There is also little data on the prevalence of other gynaecological conditions in women with EDS.

This study therefore aims to compare the severity of dysmenorrhea in patients with EDS and a control group in order to better characterise the gynaecological impact of EDS. It will also compare the prevalence of other gynaecological conditions between women with EDS and women without EDS.

Detailed Description

Patients with SED report a high prevalence of gynaecological disorders, including severe dysmenorrhoea, menorrhagia and dyspareunia. Chronic pelvic pain and pelvic floor disorders are also common, impacting quality of life and reproductive function. Menorrhagia is common and may be due to capillary fragility and altered uterine connective tissue. The use of contraceptive hormones is often considered to reduce menstrual symptoms, although their effectiveness varies. A multidisciplinary approach is recommended to tailor treatments to the specific needs of patients.

Epidemiological data on the prevalence of EDS and hypermobility spectrum disorder show an increase in diagnoses, highlighting the importance of better clinical recognition.

Primary dysmenorrhoea is generally linked to excessive production of prostaglandins, leading to uterine hypercontractility and transient myometrial ischaemia. In patients with EDS, several pathophysiological mechanisms could contribute to exacerbated menstrual pain:

  • Collagen dysregulation: fragility of uterine connective tissues that can alter myometrial contractility.
  • Frequent dysautonomia in SED: may alter uterine vascularisation and amplify pain.
  • Nociceptive hypersensitivity: described in patients with SED, increasing pain perception. This project hypothesises that patients with EDS experience more severe and/or more frequent dysmenorrhoea than the general population due to the tissue and neurological alterations specific to this syndrome.

Thus, evidence of increased dysmenorrhoea severity in EDS patients could justify better pain management and gynaecological care for these patients.

Study Design

Study Type
Observational
Observational Model
Case Control
Time Perspective
Prospective

Eligibility Criteria

Ages
18 Years to 50 Years (Adult)
Sex
Female
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • •Women aged 18 or over.
  • •Willing to participate voluntarily in the study via an online questionnaire.
  • •Of childbearing age.
  • •Reporting a diagnosis of EDS (all types) or not having EDS (control group) and being part of a database of healthy volunteers.

Exclusion Criteria

  • •Minors (< 18 years old).
  • •Menopausal women
  • •People who do not understand French well enough to complete the questionnaire.
  • •Uncertain diagnosis of EDS (exclusion of participants who suspect EDS but without medical confirmation).

Arms & Interventions

Comparator group: Women not affected by Ehlers-Danlos syndrome (EDS)

Women without Ehlers-Danlos syndrome (EDS) (control group) from a healthy volunteer base

Experimental group: women with Ehlers-Danlos syndrome (EDS)

Women with Ehlers-Danlos syndrome (EDS) of all types diagnosed by a healthcare professional

Outcomes

Primary Outcomes

Assessment of the severity of dysmenorrhea by Numerical Pain Scale (NPS)

Time Frame: Day 1

The main objective of this study is to compare the severity of dysmenorrhea in patients with Ehlers-Danlos syndrome (EDS), all types combined, and a control group of patients without connective tissue disease. This comparison will determine whether EDS is a risk factor for more severe dysmenorrhea. The primary endpoint will be measured using the numerical pain scale (NPS), which assesses pain intensity on a scale of 0 to 10. A score of 10 corresponds to the "maximum imaginable pain"

Secondary Outcomes

  • Study of the prevalence of gynaecological conditions (abnormal cervical smear)(Day 1)
  • Study of the prevalence of gynaecological conditions (PolyCystic ovary syndrome (PCOS))(Day 1)
  • Analysis of clinical factors associated with the severity of dysmenorrhea (Age) using Numerical Pain Scale (NPS)(Day1)
  • Analysis of clinical factors associated with the severity of dysmenorrhea (Body Mass Index (BMI)) using Numerical Pain Scale (NPS)(Day1)
  • Analysis of clinical factors associated with the severity of dysmenorrhea (age of onset of dysmenorrhea,) using Numerical Pain Scale (NPS)(Day1)
  • Analysis of clinical factors associated with the severity of dysmenorrhea (presence of associated menorrhagia) using Numerical Pain Scale (NPS)(Day1)
  • Analysis of clinical factors associated with the severity of dysmenorrhea (medical history) using Numerical Pain Scale (NPS)(Day1)
  • Study of the prevalence of gynaecological conditions (menorrhagia)(Day 1)
  • Study of the prevalence of gynaecological conditions (endometriosis)(Day 1)
  • Study of the prevalence of gynaecological conditions (adenomyosis)(Day 1)

Investigators

Sponsor
University Hospital, Rouen
Sponsor Class
Other
Responsible Party
Sponsor

Study Sites (1)

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