What is pelvic inflammatory disease (PID)?
Pelvic inflammatory disease (PID) is an infection of the female reproductive organs (the uterus, fallopian tubes and ovaries). Normally, the cervix (opening to the womb) prevents bacteria in the vagina from spreading up into these organs. However, if the cervix is exposed to a sexually transmitted infection (STI) such as gonorrhea or chlamydia, it becomes infected. This can allow bacteria to travel up into the internal organs, making them inflamed and infected. If this occurs, the woman's fallopian tubes may be damaged, making it difficult for her to become pregnant.
Written by familydoctor.org editorial staff