Endometriosis (en-doe-me-tree-O-sis) is an often painful disorder in which tissue similar to the tissue

ENDOMETRIOSIS
Endometriosis (en-doe-me-tree-O-sis) is an often painful disorder in which tissue similar to the tissue that normally lines the inside of your uterus — the endometrium — grows outside your uterus. Endometriosis most commonly involves your ovaries, fallopian tubes and the tissue lining your pelvis. Rarely, endometrial tissue may spread beyond pelvic organs.
With endometriosis, the endometrial-like tissue acts as endometrial tissue would — it thickens, breaks down and bleeds with each menstrual cycle. But because this tissue has no way to exit your body, it becomes trapped. When endometriosis involves the ovaries, cysts called endometriomas may form. Surrounding tissue can become irritated, eventually developing scar tissue and adhesions — abnormal bands of fibrous tissue that can cause pelvic tissues and organs to stick to each other
SYMPTOMS
Painful periods (dysmenorrhea).Pelvic pain and cramping may begin before and extend several days into a menstrual period. You may also have lower back and abdominal pain.Pain with intercourse. Pain during or after sex is common with endometriosis.Pain with bowel movements or urination. You’re most likely to experience these symptoms during a menstrual period.Excessive bleeding. You may experience occasional heavy menstrual periods or bleeding between periods (intermenstrual bleeding).Infertility. Sometimes, endometriosis is first diagnosed in those seeking treatment for infertility.Other signs and symptoms. You may experience fatigue, diarrhea, constipation, bloating or nausea, especially during menstrual periods.
Major causes are

  • Immune system disorder
  • Embryonic cell transformation.
  • Surgical scar implantation.
  • Retrograde menstruation. In retrograde menstruation, menstrual blood containing endometrial cells flows back through the fallopian tubes and into the pelvic cavity instead of out of the body. These endometrial cells stick to the pelvic walls and surfaces of pelvic organs, where they grow