Endometriosis
Endometriosis (en-doe-me-tree-O-sis) is a frequently excruciating issue where tissue like the tissue that regularly lines within your uterus — the endometrium — develops outside your uterus. Endometriosis most normally includes your ovaries, fallopian tubes and the tissue covering your pelvis. Once in a long while, endometrial-like tissue might be found past the area where pelvic organs are found.