Adenomyosis

Adenomyosis is a condition in which tissue similar to the lining of the womb grows into the muscular wall of the womb. It can make the womb larger and periods heavier and more painful. It is most often found in people in their 40s and 50s who have had children, but can affect younger people too.

Last updated Nov 9, 2026

What it is

The cause is not fully understood. Symptoms usually ease after the menopause.

Treatment depends on symptoms and on whether you want to become pregnant: pain relief, hormonal treatments such as the hormonal coil or the pill, and in some cases surgery, including hysterectomy.

Common signs

  • Heavy periods
  • Painful periods, sometimes severe
  • Pelvic pain or pressure, pain during sex
  • Some people have no symptoms

How it is usually diagnosed

  • A pelvic ultrasound, often transvaginal
  • An MRI scan in some cases
  • Blood tests for anaemia if periods are heavy

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Ultrasound and MRI reports
  • A period diary showing bleeding and pain
  • Blood counts and ferritin results
  • Gynaecology letters and the treatments you have tried

Questions to ask your doctor

  • Which treatment options suit me, given my plans for children?
  • Could I also have endometriosis or fibroids?
  • Should my iron levels be checked?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Very heavy bleeding with dizziness, fainting or a racing heart
  • Sudden severe pelvic pain

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources