1. About 2 percent to 5 percent of the general population experiences amenorrhea . 2. Women with 46 XX gonadal dysgenesis experience primary amenorrhea with hypergonadotropic hypogonadism. 3. It is also known as postpartum galactorrhea-amenorrhea syndrome. 4. Examples include the absence of a cervix and primary amenorrhea . 5. Amenorrhea occurs in many women who practice disordered eating and rigorous athletic training.6. They also used to treat secondary amenorrhea , dysfunctional uterine bleeding and endometriosis. 7. One example is women with eating disorders suffer from oligomenorrhea and secondary amenorrhea . 8. Endocrinopathy manifests as amenorrhea and hypoplasia of the uterus. 9. Rather than early puberty, adolescents with sex cord-stromal tumors may experience amenorrhea . 10. Gonadotropin deficiency will often cause amenorrhea , oligomenorrhea, hot flashes, or decreased libido.