Endometriosis is characterized by the presence of tissue that typically grows inside the uterus appearing in unusual anatomical locations. This condition is quite prevalent and might not cause any symptoms, but it can result in significant pain and has been linked to infertility. It is most frequently found in the Fallopian tubes, on the exterior of the tubes and ovaries, the outer surface of the uterus and intestines, and throughout the abdominal cavity. Less commonly, endometriosis can appear on the liver's surface, in old surgical scars, or very rarely, in the lungs or brain. It typically develops during the reproductive years, with the average age of diagnosis being between 25 and 30. The condition may be suspected during a physical exam and is usually confirmed through surgery. Treatment options include pain relief medication, hormone therapy, and surgical intervention. Common misspellings include andrometriosis, endometreosis, endometrisis, edometriosis, and indometriosis.