Menstruation, periodic discharge from the vagina of blood, secretions, and disintegrating mucous membrane that had lined the uterus. 1  The biological significance of the process in humans can best be explained by reference to the reproductive function in other mammals.
Chlamydia is a common sexually transmitted disease (STD) caused by infection with Chlamydia trachomatis. It can cause cervicitis in women and urethritis and proctitis in both men and women.
Disease in the Female. In the female, infections with several serovars of Chlamydia trachomatis lead to cervicitis and urethritis as the primary sexually transmitted diseases (STDs). Pelvic Inflammatory Disease (PID) and Tubal Factor Infertility (TFI) are major complications of genital Chlamydia infection.