Pelvic inflammatory disease (PID) Health Article

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Reviewer Info: Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Facility, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.; ADAM Health Illustrated Encyclopedia, 09/02/2009
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Definition

Pelvic inflammatory disease is a general term for infection of the uterus lining, fallopian tubes, or ovaries.

See also: Endometritis

Alternative Names

PID; Oophoritis; Salpingitis; Salpingo-oophoritis; Salpingo-peritonitis

Causes, incidence, and risk factors

Most cases of pelvic inflammatory disease are caused by bacteria that move from the vagina or cervix into the uterus, fallopian tubes, ovaries, or pelvis.

The most common cause of PID is sexual contact without using a condom or other protection. This is called a sexually transmitted disease (STD). Chlamydia and gonorrhea are the two bacteria that cause most cases of PID.

However, bacteria may also enter the body during some surgical or office procedures, such as:

In the United States, nearly 1 million women develop PID each year. About 1 in 8 sexually active adolescent girls will develop PID before age 20.

Risk factors include:

  • Male sexual partner with gonorrhea or chlamydia
  • Multiple sexual partners
  • Past history of any sexually transmitted disease
  • Past history of PID
  • Recent insertion of an IUD
  • Sexual activity during adolescence

Symptoms

The most common symptoms of PID include:

  • Fever (not always present; may come and go)
  • Pain or tenderness in the pelvis, lower abdomen, or sometimes the lower back
  • Vaginal discharge with abnormal color, texture, or smell

Other symptoms that may occur with PID:

Note: There may be no symptoms. People who experience an ectopic pregnancy or infertility often have had silent PID, which is usually caused by chlamydia infection.

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