Pelvic inflammatory disease (PID) is a serious infection of the female reproductive organs. These include the uterus, ovaries, and fallopian tubes. PID can cause scar tissue to form in the pelvis and fallopian tubes. This damage may result in infertility, a future tubal pregnancy, or chronic pelvic pain.

Female Reproductive Organs
Fallopian Tube, Ovary, and Uterus
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PID is caused by bacteria that travel to the reproductive organs. A single bacteria or mixture of several bacteria may cause the infection. The most common bacteria that initiate PID are gonorrhea and chlamydia.