A disease where endometrial tissue grows in the muscle layer of the wall of the womb, bleeding and causing pain. This is not the same as endometriosis although the two diseases can occur together.

The most common symptoms are:
• Heavy, painful or irregular periods
• Pre-menstrual pelvic pain and feelings of heaviness/discomfort in the pelvis

Less common symptoms are:
• Pain during sexual intercourse
• Pain related to bowel movements

Adenomyosis can take many years to diagnose.