Endometriosis is traditionally defined as a non-cancerous gynecological disorder in which endometrial tissue grows outside the uterus. It results in pelvic pain, bleeding, and is a major reason for female infertility.
Currently, endometriosis is considered a systemic disease. It affects the liver and fat tissue metabolism resulting in systemic inflammation and changes in gene expression in the brain that triggers pain and mood disorders.
In this condition, the endometrial tissue implants and inserts into the female pelvis's organs (fallopian tubes and ovaries) could also affect other tissues like the bladder or the bower.