Pelvic Inflammatory Disease (PID) is the name given to inflammation of a woman’s reproductive organs; the womb (or uterus), fallopian tubes, ovaries and surrounding tissues.

PID is usually caused by a bacterial infection that spreads from the cervix (neck of the womb) up into the womb, fallopian tubes and ovaries.

In about a quarter of women it is caused by a sexually transmitted infection (STI) such as Chlamydia or Gonorrhoea.