What Is Endometriosis? Endometriosis Is A Disorder In Which Tissues That Normally Lines The Uterus Grows Outside The Uterus More Than Five Million Women Are Affected By Endometriosis In The United States There Is No Cure For Endometriosis, But Treatment Can Help Alleviate Symptoms Pain Medications For Endometriosis Surgery To Remove Endometrial Tissue & Scar Tissue May Be An Option For Women Treating Infertility