​Causes of Endometriosis: The exact causes of endometriosis are not fully understood, but there are several factors that may contribute to its development. Retrograde menstruation: As per this theory, the menstrual blood containing endometrial cells flows backwards through the fallopian tubes and into the pelvic cavity. These cells then implant and grow outside the uterus. Metaplasia: Metaplasia is the process by which one type of tissue transforms into another. It is believed that certain primitive cells in the pelvic region originating from the embryonal stages can undergo metaplasia and transform into endometrial-like tissue. However, the exact cause can vary among individuals, and in many cases, the cause remains unknown. The infiltrative tissue can cause pain, scarring, and adhesions of the reproductive organs as well as the organs within and outside the pelvis. Adhesions and scar tissues can distort and damage the ovary and fallopian tubes, leading to infertility. Pain during intercourse can also contribute to infrequent intimate relations that hamper fertility. A physical examination of the patient helps in diagnosing the disease. Investigations include trans-vaginal ultrasound and MRI-Pelvis. They are conducted to identify endometriotic cysts and deep deposits that can scar the rectum. Exact treatment varies according to the condition and symptoms of the patient. Treatments include Pain Management, Medical therapy and Surgery to remove the diseased tissue completely. If left undiagnosed and untreated, endometriosis can worsen over time, leading to serious symptoms, and more complex treatments. It can also have an impact on mental health, leading to depression, anxiety, and other psychological issues. If one has endometriosis and believes it is affecting mental and emotional well-being, consider getting into a support group for women experiencing similar issues. Sometimes just talking to other women who understand feelings and experiences might help.