Endometriosis is a chronic and painful disease

Understanding endometriosis can be difficult. Learn more about the inner workings of the disease and why it hurts.


Endometriosis occurs when tissue that acts a lot like the lining of your uterus—called endometrium—starts growing outside of your uterus, where it doesn't belong.

These out-of-place growths, called lesions or implants, can cause severe pain and inflammation throughout the month.



Click to watch the “Inner Workings of Endometriosis” video

Inner workings of endometriosis

Patches of endometrium-like tissue are like vines; they can cling to certain organs nearby. Learn more about the inner workings of this disease and why it hurts.

View transcript
Click to watch a video of women discussing how endometriosis has affected them

How it’s affected me

Listen to women discuss the impact of endometriosis on them.

View transcript