Endometriosis and the Long Wait for Diagnosis

Contents

1. Delay is counted in years from first symptom
2. Studies place the average between five and twelve years
3. Different reviews reach different figures
4. The disease itself
5. The symptoms are varied and easily dismissed
6. Social and cultural factors lengthen the wait
7. Confirming it has required surgery
8. Records and research aim to shorten it
9. Treatment does not wait for surgery

The care of painful periods and other menstrual disorders, endometriosis among them, has run through Candace Cooley’s years in practice, and the figure researchers keep returning to for it is a length of time. Diagnostic delay is measured in years, counted from the point when symptoms begin to the point when a physician confirms the disease. It is a crude unit, dependent on memory and on medical records, but it has become the standard way to describe how the condition is recognized.

Delay is counted in years from first symptom

The measurement is less simple than it sounds. A 2024 systematic review in BJOG, summarized by Contemporary OB/GYN, found that studies used three definitions: the whole span from first symptom to diagnosis, the time from first symptom to first related visit to a physician, and the time from that first visit to diagnosis.¹ Separating the last two shows how much of the wait passes before a woman seeks care and how much passes once she is inside the health system.

Figure

Three ways to count the delay

1. 01
   Total delayFrom the first symptom to a diagnosis by a physician.
2. 02
   Before careFrom the first symptom to the first related visit to a physician.
3. 03
   Inside careFrom that first visit to the diagnosis, called clinical time.

Studies place the average between five and twelve years

The same review included 17 observational studies published between 2018 and 2023, from the United Kingdom, the United States, Australia and five other countries. Mean time to diagnosis in the cross sectional studies ranged from 5.4 to 11.4 years, and medians ran from 5 to 12 years. Clinical time, from first visit to diagnosis, was shorter, from 0.3 to 8.6 years.¹ Most of the patients studied were White women aged at least 30 who came with several gynecologic symptoms, and the reviewers rated the cross sectional studies poor to fair in quality, with selection and reporting bias common.¹

Figure

What a systematic review found about the delay

Studies included, from eight countries

17

Range of mean time to diagnosis in cross sectional studies

5.4 to 11.4 years

Range of median time to diagnosis

5 to 12 years

Range of clinical time, from first visit to diagnosis

0.3 to 8.6 years

Different reviews reach different figures

Other estimates fall inside that range. Researchers at the University of York reviewed 22 papers and found an average of 6.6 years, with individual studies running from six months in Brazil to 27 years in one British study. Timelines differed markedly between countries, and the authors singled out the United Kingdom for some of the longest waits.³ The MIT Center for Gynepathology Research cites an average of about seven years.⁴ A 2023 radio news report put it at seven to eight years.⁵ A French cohort of about 6,950 women, reported by Contemporary OB/GYN in 2026, found an average of 10 years for endometriosis and 11 for the related condition adenomyosis.²

The disease itself

Inside the uterus, the lining is shed with some blood and mucus each month as a period. MedlinePlus Magazine, published by the National Institutes of Health, describes endometriosis as tissue resembling the uterine lining that grows elsewhere in the body: on the ovaries and fallopian tubes, behind the uterus, on the tissues that hold it in place, and on the bowel or bladder. There it can cause inflammation, bleeding, pain and irritation.⁶ It is common, found in roughly one in ten women during the years when they menstruate.⁶ Risk factors include periods that began before age 11, cycles shorter than 27 days, heavy periods lasting more than seven days and relatives with the disease.⁶

The symptoms are varied and easily dismissed

Pelvic pain is the main symptom, usually worse during menstruation. MedlinePlus also lists severe lower abdominal pain or bloating, low back pain, pain with bowel movements or urination, nausea, heavy periods or spotting between them, pain during sex and fatigue.⁶ The 2010 bulletin of the American College of Obstetricians and Gynecologists, discussed below, reported that endometriosis is found in 71 to 87 percent of women with chronic pelvic pain.⁷ Such a broad and ordinary list overlaps with many other complaints, including heavy menstrual bleeding. The York researchers found that the papers they reviewed cited normalization of painful symptoms, by health professionals and by friends and family, as one reason for delay.³

Social and cultural factors lengthen the wait

The cultural obstacles are documented too. The York team listed lack of knowledge among patients and professionals, the stigma of discussing a gynecological condition, poor access to good health systems and the absence of an established referral pathway.³ The French cohort put numbers on some of these. Being out of work, carrying more coexisting illnesses, reporting worse cramps before diagnosis, seeing a longer list of professionals and arriving at a first appointment with many complaints all went with a longer wait, whereas financial comfort went with a wait shorter by about 1.4 years.² Relatives with the disease or with chronic pelvic pain did not speed things up; that history was tied to a delay longer by about a year.²

Figure

Factors linked to a longer wait

• Several symptoms at the first consultation1.6
• Family history of the disease or chronic pelvic pain1.1
• Severe period pain before diagnosis0.8
• Unemployment0.7
• Each additional health professional consulted0.3

years

Confirming it has required surgery

The biological obstacle is that the disease often cannot be seen without looking inside the body. MedlinePlus states that surgery is the only way to diagnose endometriosis, usually laparoscopy, in which a surgeon uses a thin tube with a camera to look at the pelvic organs, sometimes taking a small tissue sample.⁶ Ultrasound and MRI can help.⁶ A 2010 practice bulletin from the American College of Obstetricians and Gynecologists, reported by Drug Topics, recommended vaginal ultrasound as the best method for detecting endometriosis but agreed that laparoscopy was the only definitive test.⁷ The review in BJOG listed surgical, tissue, imaging and clinical diagnosis among the methods its studies accepted.¹

Records and research aim to shorten it

Some proposed remedies are administrative. The York researchers noted that most studies relied on women recalling their own symptoms, and that medical records were often inadequate or unavailable, a problem that grows when women see many professionals in many settings. Jodie Fryer, who led the work, added that women often struggle to put their symptoms into words. Better record keeping, the team argued, would allow the delay to be tracked accurately and help set guidelines on what counts as a reasonable wait and what counts as an excessive one.³ Others are scientific. In 2023 researchers reported mapping the cellular changes linked with endometriosis, work that could lead to quicker diagnosis and better treatment.⁵ The MIT center describes its own work on the biology of the disease and on new therapeutic approaches as an effort to accelerate research.⁴

Treatment does not wait for surgery

Because confirmation is invasive, treatment often begins on the basis of symptoms. The 2010 bulletin recommended starting with conservative, nonsurgical approaches, moving to more invasive options if pain did not resolve, and reserving hysterectomy as a last resort. Even then, the committee chair said, if both ovaries looked normal and all visible endometriosis had been removed, keeping the ovaries deserved consideration.⁷ MedlinePlus notes that hormonal medicines given as pills, injections or nasal spray can ease pain and bleeding, and that surgery can remove areas of scar tissue, either through small incisions or, in a laparotomy, through a larger cut in the abdomen.⁶ Over the counter pain medicine may also help.⁶

Figure

The stepwise approach to treatment

1. 01
   Conservative care firstNonsteroidal anti inflammatory drugs and hormonal medicines.
2. 02
   NextGonadotropin releasing hormone agonists, which lower ovarian hormones.
3. 03
   Then surgeryLaparoscopic surgery if less invasive methods fail.
4. 04
   Last resortHysterectomy, when other treatment has not relieved the pain.

The honest limit sits on both sides of the subject. The delay figures rest largely on women’s memories of when symptoms began and on studies of uneven quality, so they describe a pattern more reliably than any precise number.¹³ And a diagnosis, once made, does not end the disease: MedlinePlus states that endometriosis cannot be cured or prevented, and that symptoms can return when medicine is stopped.⁶ The choice of tests and treatment for any individual belongs to her and her own clinician. Another common condition tied to the menstrual cycle is covered under polycystic ovary syndrome.