When a woman has her period, the lining of the womb is shed, resulting in monthly bleeding. Endometriosis is a condition where cells/tissue similar to that found in the womb grows in places outside of the womb, such as the ovaries and fallopian tubes. Each month these cells act like those in the womb, meaning that they build up, break down and bleed. Unfortunately, unlike in the womb, these cells have nowhere to go and this can lead to inflammation, pain and the formation of scar tissue.
Endometriosis can affect women of any age, including teenagers. It’s a chronic condition that can persist even after menopause. The cause of endometriosis is unknown, although there are many theories.