Pelvic inflammatory disease (PID) is an infection of the female reproductive organs. PID occurs when bacteria move from the vagina and cervix upward into the uterus, ovaries or fallopian tubes. The bacteria can lead to an abscess in a fallopian tube or ovary. Long-term problems, like infertility, ectopic pregnancy and chronic pelvic pain, can occur if PID is not treated promptly.
It is common, diagnosed in more than 1 million women each year in the United States.
Gonorrhea and chlamydia are the main cause of PID. When a woman is infected with gonorrhea or chlamydia and does not receive treatment, it can take anywhere from a few days to a few weeks before she develops PID. PID also can be caused by infections that are not sexually transmitted, such as bacterial vaginosis.
PID can occur at any age in women who are sexually active. Those younger than 25 are more likely to develop PID. Other risk factors include:
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Infection with an STI, most often gonorrhea or chlamydia
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Multiple sex partners (the more partners, the greater the risk)
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A sex partner who has sex with others
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Past PID
Some research suggests that women who douche frequently are at increased risk of PID. Douching is not recommended.