Endometriosis, explained plainly

What endometriosis is

Endometriosis is a chronic condition in which tissue resembling the lining of the uterus grows outside it — most often on the ovaries, fallopian tubes, bowel, bladder and the peritoneum lining the pelvis.

That tissue responds to hormonal cycles, inflames the area around it and can form adhesions that bind organs together. It is a whole-body inflammatory disease, not a monthly inconvenience.

Symptoms worth taking seriously

Severe period pain, pain during or after sex, pain when urinating or opening the bowels, chronic pelvic pain, heavy bleeding, bloating, profound fatigue, and difficulty conceiving.

Symptom severity does not track disease stage. Minimal visible disease can cause disabling pain, and extensive disease can be nearly silent. Pain that stops someone attending school or work is reason enough to investigate.

How diagnosis actually works

Assessment starts with a symptom history, then examination and imaging — transvaginal ultrasound or MRI, which can identify ovarian endometriomas and deep disease but routinely miss superficial disease.

Laparoscopy with histology remains the definitive answer. Guidelines now support starting treatment on clinical suspicion rather than delaying care until surgery, which is why documenting symptoms early matters.

Treatment options

Hormonal therapy (combined pill, progestins, GnRH analogues) suppresses cycling and reduces pain for many people, but does not remove lesions and has side effects that matter.

Excision or ablation surgery at a specialist centre treats the disease directly and can improve pain and fertility outcomes. Alongside both sit pelvic physiotherapy, pain medicine, and fertility care.

No treatment is curative today. The realistic goal is fewer symptoms, less disease progression, and a life that is not organised around pain.

Myths that cause harm

“Pregnancy cures it.” It does not. Symptoms may pause during pregnancy and usually return.

“A hysterectomy fixes it.” Removing the uterus does not remove disease elsewhere in the pelvis.

“Bad periods are normal.” Pain that requires missing school, work or daily life is a clinical finding, not a personality trait.

Glossary

Laparoscopy — keyhole surgery through small abdominal incisions, used to see and treat lesions.

Excision — cutting lesions out at the root, as opposed to burning the surface (ablation).

Adenomyosis — related condition where similar tissue grows inside the muscular wall of the uterus.

Endometrioma — an ovarian cyst filled with old blood, sometimes called a chocolate cyst.

Deep endometriosis — lesions infiltrating more than 5mm below the peritoneal surface, often involving bowel or bladder.