Pelvic inflammatory disease (PID) is the term for upper genital tract infection causing endometritis, salpingitis, oophoritis, parametritis, peritonitis or tubo-ovarian abscess.
PID is a common cause of morbidity and accounts for one in 60 GP consultations by women under the age of 45 years (RCOG Green-top Guideline No. 32).
Historically, pelvic infection used to be caused most commonly by illegal 'back street' termination of pregnancy. Worldwide, this is still a significant problem. In the UK, since the 1967 Abortion Act, septic miscarriage is now rare and most cases of PID are thought to relate to sexually transmitted infection.