What gets dismissed often keeps progressing.
London, March 2026
Endometriosis remains one of the most misunderstood chronic conditions in women’s health despite its scale and impact on daily life, fertility and long-term wellbeing. The World Health Organization estimates that it affects around 190 million women and girls of reproductive age worldwide, yet it is still frequently confused with ordinary menstrual pain, delaying diagnosis and treatment for years in many cases.
The condition occurs when tissue similar to the lining of the uterus grows outside the uterus, most commonly in the pelvic area. That can trigger inflammation, severe pain and, in some cases, fertility problems. One reason the disease is so often overlooked is that many of its symptoms overlap with complaints that are routinely normalized, especially painful menstruation.
Its symptom profile is broader than many people assume. The WHO describes severe pain during menstruation, heavy bleeding, chronic pelvic pain, bloating, nausea and infertility among the main manifestations. Medical references also identify pain during sex, bowel movements or urination, as well as lower back and abdominal pain, which is one reason the disorder can be confused with gastrointestinal, urinary or other gynecological conditions.
Diagnostic delay remains one of the central problems surrounding the disease. Research and medical reporting have shown that suspected cases are often misread or minimized, while many patients spend years moving between consultations before receiving a clear diagnosis. Part of that delay comes from the fact that symptoms do not always follow the same pattern, and not all patients experience pain in an easily recognizable cyclical form.
The consequences are not only physical. Chronic pain can interfere with school, work, sleep, emotional health and social life, while fertility concerns can add a further layer of uncertainty. The WHO treats endometriosis as a chronic condition with a significant effect on quality of life, which is why the issue is increasingly framed not only as a gynecological matter, but as a wider problem of recognition, access to care and public health.
Medical guidance has increasingly moved toward earlier evaluation instead of passive normalization. Severe period pain that repeatedly disrupts everyday activities, pelvic pain that extends beyond menstruation, or recurring pain linked to sex, urination or bowel movements can all justify clinical assessment. Endometriosis does not present in the same way in every patient, and that variability is precisely what has made underrecognition so persistent.
For now, the central issue is not lack of symptoms, but lack of recognition. Endometriosis is already affecting millions, yet many cases still pass through years of doubt, dismissal or confusion before the condition is identified. The scale of the disorder is clear. The unresolved question is whether health systems and clinical practice will stop treating severe menstrual and pelvic pain as routine discomfort and start reading it as a possible warning sign.
Phoenix24: clarity in the grey zone. / Phoenix24: clarity in the grey zone.