Endometriosis is derived from the word “endometrium,” which is the uterine tissue. Endometriosis is a disorder in which tissue that resembles the lining of the uterus from the inside develops on the outside. Endometriosis causes the tissue lining the inside of the uterus to thicken, break down, and bleed during each period. However, new tissue growth on the uterine wall may retain blood, resulting in painful periods and pain while having intercourse. Therefore, endometriosis makes it harder for a woman to conceive.
