Stage 4 endometriosis: what it really means for you

You’ve just been told you have "stage 4," and that number is scary. That’s normal: it sounds like a verdict. But stage 4 endometriosis doesn't tell the whole story—not about your pain, your fertility, or your future. We explain what this stage really means, what it doesn't mean, and how you can live with it, notably through the story of Aïssa, who was diagnosed with severe stage 4 at 39.

What exactly is stage 4?

Endometriosis is categorized into 4 stages of increasing severity according to the American Society for Reproductive Medicine (ASRM) revised classification, based on a point system assigned according to the location, size, and depth of lesions, as well as the presence of adhesions. Stage 4, known as "severe," corresponds to a score of over 40 points. In practical terms, this often involves numerous deep implants, large ovarian cysts (sometimes called "chocolate cysts" due to their contents), and dense adhesions that can literally fuse certain pelvic organs together.

This is exactly what Aïssa, now a health coach, experienced: during her MRI, the radiologist told her she had very extensive endometriosis that had been present for about twenty years. She describes a loss of mobility, particularly in her back, caused by these adhesions that "stick" organs together—a discomfort that can persist outside of your period.

How is stage 4 confirmed?

Staging is based on a surgical assessment, most often performed via laparoscopy (a minimally invasive procedure), which allows for direct visualization of the extent of the lesions, cysts, and adhesions. Additionally, a well-interpreted pelvic MRI can now anticipate many of these elements even before the procedure, which helps in better preparing for treatment. Stage 4 is often associated with "deep" endometriosis, meaning lesions that infiltrate tissues deeply rather than remaining on the surface, and which can affect the uterine ligaments, rectum, colon, or bladder. This explains why some women at this stage also experience pain during bowel movements or urination, in addition to classic pelvic pain.

What stage 4 does NOT mean

This is arguably the most important information in this article: the severity of the stage is not correlated with the intensity of the pain felt. A woman at stage 1 can suffer immensely, while a woman at stage 4 can be almost asymptomatic and only discover her condition during a fertility check-up. This classification, established surgically, is primarily used to guide therapeutic strategy, not to predict your daily experience.

Staging guides medical and surgical decisions, but it does not necessarily reflect the intensity of the symptoms experienced by the patient.

In other words: your stage does not define your suffering, and your suffering does not define your stage. Both deserve to be taken seriously, independently of one another. This discrepancy is also reflected in how an endometriosis flare-up manifests: its intensity has nothing to do with the anatomical stage of the disease.

Aïssa’s story: when the diagnosis hits

Aïssa received her diagnosis right at the start of her fertility journey. The dilemma was immediate: hormonal treatments, often the first line of defense to manage endometriosis, are incompatible with trying to conceive. Worse, the hormonal stimulation required for fertility treatments tends to "wake up" the endometriosis, intensifying pain for months on end without the possibility of concurrent treatment.

Faced with this impasse, she made a bold decision: to pause her fertility journey to focus on pain management, even if it meant delaying her plans for a baby. This pivotal moment led her to train in functional health (movement, nutrition, stress and sleep management) and, eventually, to pivot to a career as a health coach.

The psychological impact of a diagnosis at this stage

Receiving a stage 4 diagnosis after years of uncertainty often triggers a complex mix of emotions. Aïssa describes both a sense of relief—finally having a name for symptoms she had lived with for twenty years—and a form of shock at the severity of the disease. As she researched, she discovered she was far from alone: hundreds of thousands of women in France live with endometriosis or PCOS, often without even realizing it, as these conditions remain significantly underdiagnosed. It was this sense of community, and the desire to help even one other woman navigate what she had been through, that motivated her career change.

Stage 4 and fertility: what you need to know

Stage 4 is indeed associated with a more significant impact on natural fertility, especially when adhesions affect the fallopian tubes or ovaries. However, there are two important nuances:

In the case of IVF, results remain comparable to those for other causes of infertility, with encouraging cumulative success rates after several attempts. The stage of the disease does not, on its own, determine the outcome of a pregnancy journey, although age remains a key factor, particularly after 40.

What are the treatment options at this stage?

Management of stage 4 is highly individualized and depends heavily on your life goals (whether or not you are trying to conceive), the intensity of your pain, and the exact location of the lesions.

Hormonal treatments

These aim to reduce the production of estrogen, which "feeds" endometrial tissue. They are effective for pain but are incompatible with an immediate desire for pregnancy.

Surgery

This is often considered in cases of debilitating pain that is resistant to medical treatment, or in the context of infertility. The goal is to remove lesions and clear adhesions, if possible via laparoscopy, while preserving the ovaries as much as possible.

Complementary support

Alongside medical care—never as a replacement—support focused on movement, anti-inflammatory nutrition, and stress management can provide real daily relief. This is precisely the role Aïssa has chosen: helping other women implement, step by step, the habits that concretely alleviate symptoms.

Living with stage 4: what really helps

Aïssa emphasizes a point that is often counterintuitive: the more you move, the less opportunity adhesions have to "lock" organs in place. Conversely, inactivity perpetuates loss of mobility and pain. Movement also releases molecules that fight inflammation (myokines), in addition to serotonin and oxytocin, which contribute to overall well-being.

His advice: start with tiny, non-negotiable actions, like a few minutes of walking every day, rather than aiming for an ambitious fitness program you'll abandon after two weeks. It’s the logic of small steps: make the action so simple that it becomes hard to avoid.

An anti-inflammatory diet (less refined sugar, more omega-3 fatty acids, more protein) and better sleep and stress management often round out this foundation. None of these levers replace medical supervision, but together, they can make a real difference in your daily life, especially regarding chronic fatigue and the intensity of painful flare-ups.

Key takeaways

Stage 4 is the most extensive form of endometriosis according to medical classification, but it doesn't predict your pain level or necessarily your chances of getting pregnant. It is a benchmark for guiding treatment, not a verdict on your life. A multidisciplinary approach, combining medical and complementary care, allows you to move forward one step at a time, just as Aïssa did.

FAQ

Does stage 4 mean I won't be able to have children naturally?

No. Some women with stage 4 conceive spontaneously, and surgery, when indicated, significantly improves the rates of subsequent spontaneous pregnancy.

Do I necessarily have to have surgery if I am stage 4?

Not necessarily. Surgery is considered in cases of debilitating pain that is resistant to medical treatment or if the disease is complicating plans for pregnancy. The decision is made with your gynecologist, based on your specific situation.

Why is my pain less severe than my stage suggests (or vice versa)?

Because the intensity of the pain is not correlated with the severity of the stage. This is one of the known limitations of this classification, which remains primarily a surgical tool.

Can stage 4 affect organs other than the uterus and ovaries?

Yes. This is known as deep endometriosis: lesions can infiltrate the uterine ligaments, rectum, colon, or bladder, which explains why digestive or urinary pain may occur in addition to pelvic pain.

Learn more on Reflet

Aïssa shares her full journey, from interrupted IVF to her career change as a health coach, in a video you can find here: Aïssa's full testimonial.

To gain a deep understanding of the mechanisms of endometriosis and, most importantly, concrete natural solutions to implement in your daily life, join Reflet and watch our health series Invisible Endometriosis, hosted by Carole Minker: solid scientific foundations, explained simply, and real, step-by-step action.

You can also read our article on how to know if you have endometriosis if a diagnosis is still an open question for you, or the one on the benefits of Omega-3s for women to dive deeper into anti-inflammatory nutrition.

All our health series are created with healthcare professionals and designed in three stages (scientific data, practical solutions, and taking action). They are available by subscription, like a Netflix for women's health.

This article is for informational purposes only and does not replace medical advice. Only a healthcare professional can provide a diagnosis or determine the stage of endometriosis.