In endometriosis, cells similar to those found in the lining of the womb can build up outside the womb, causing pain and inflammation. During the debate, Ms Dillon said endometriosis affects at least one in 10 women across the island but takes eight to nine years to receive a diagnosis. I am angry on behalf of the many women and girls who have been disbelieved about their real and severe pain, which is minimised, discarded and ignored,” she said. Endometriosis is where cells similar to those in the lining of the womb grow in other parts of the body. MLAs have said women are waiting up to nine years for a diagnosis of endometriosis.