Problems with abdominal tissue
Some researchers believe that the abdomen’s small regions transfer the abdomen’s tissues into endometrial tissues, thus leading to endometriosis. The transfer of scarring tissue in the abdominal area might happen because maybe the abdomen cells are made up of embryonic cells that can change their shape and start acting as endometrial cells. The displaced endometrial cells start residing in the walls of your pelvis and the surface of pelvic organs like the ovaries, rectum, and the bladder. The displaced endometrial cells keep on thickening and bleed away with the uterine wall during the menstrual period.