Endometriosis is a condition in which the cells of the lining of the womb deposit in the pelvis and other parts of the abdomen outside the womb. These cells get active every month during menstruation. This may cause problems such as chronic pelvic pain, period pains, pain during sexual intercourse, inability to conceive etc. Endometriosis is exaggerated by oestrogen hormone and is suppressed by progesterone hormone. Endometriosis can be graded from Stage 1 to Stage 4 depending on the severity of the disease. Ultrasound, MRI and laparoscopy are used to diagnose endometriosis. Endometriosis is treated by medical and surgical methods. Endometriosis is curable and there are lots of different forms of treatment for it.