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What Is Pelvic Inflammatory Disease?

What is pelvic inflammatory disease (PID)?

Pelvic inflammatory disease (PID) is an infection of the upper genital tract and can affect the uterus, Fallopian tubes and ovaries. The disease usually occurs when sexually transmitted bacteria move up form the vagina through the cervix, into the upper genital tract.

Aside from AIDS, PID is the most common - and most serious - complication arising from sexually transmitted diseases (STDs) among women.

What causes PID?

The most common causes of PID are sexually transmitted micro-organisms, which can lead to diseases such as gonorrhoea and chlamydia. The micro-organisms which cause these STDs are passed on through the sexual organs from the male to the female partner by being transmitted to the vagina and cervix during intercourse.

From there, they can travel into the female internal reproductive organs. Bacteria participating in the developing infection can also be those ones which are normally found in the large intestine (colon). This may happen when intestinal bacteria gain access to the vagina, especially when vaginal intercourse occurs immediately after anal sex.

Less common, PID can be caused by other organisms such as TB, and rarely by those causing bilharzia (schistosomiasis) and leprosy.

Who gets PID and who is at risk?

It is more common in women under the age of 35, who are sexually active.

Factors which increase the risk of PID:

Symptoms and signs of PID:

Acute PID often starts shortly after a period, with lower abdominal pain that becomes progressively worse.

A woman with PID may experience vomiting, high fever and a copious, foul-smelling vaginal discharge. However, a low-grade fever, mild to moderate abdominal pain, irregular bleeding and vaginal discharge can also be symptoms of the disease.

When examined by a doctor, the abdomen is tender and even ridig, and if the cervix is moved during the gynaecological examination, this will increase the pain.

After an acute attack, chronic PID may follow with chronic pelvic pain, irregular periods and possibly infertility, all signs of adhesion formation and scarring within and around the Fallopian tubes and ovaries, along with other pelvic organs.

Flaring up of the disease may occur commonly with bowel organisms.

How is PID diagnosed?

Generally, a diagnosis of PID will be based on the presence of lower abdominal tenderness, a raised temperature and the clinical findings on gynaecological examination - vaginal and cervical discharge, and tenderness of the uterus, tubes and ovaries during palpation.

While performing the speculum examination, the doctor will takes swabs to test for chlamydia, gonorrhoea and other micro-organisms. 

While doing the palpation, the doctor may feel a swelling and resistance on either one or both sides of the uterus, indicating severe inflammation of the Fallopian tubes and ovaries (adnexal mass). These findings may be confirmed, if necessary, by an abdominal or transvaginal ultrasound examination.

If the symptoms are only on one side, together with an unclear history, the differential diagnosis of an acute appendicitis or an ectopic pregnancy has to be taken into account and a laparoscopy may be performed.

This is a surgical procedure under general anaesthesia during which an endoscope (a thin fibre-optic tube with light supply) is inserted through a small incision just below the navel. This procedure allows the gynaecologist to visually examine the uterus, Fallopian tubes and ovaries as well as the appendix and other pelvic structures. 

During laparoscopy, the gynaecologist will take the decision whether the condition is due to PID which will be treated conservatively with antibiotics, or whether to proceed with surgery by removing an inflamed appendix or an ectopic pregnancy.

How can PID be prevented?

Most cases of PID could be prevented if sexually active couples are mutually monogamous.

If "she" has sexual intercourse with only "him"and vice versa, there would be no third (possibly contaminated) person who would bring sexually transmissible micro-organisms into their intimate relationship.

Second choice of prevention is what is often referred to as "safe sex". This means you try to prevent contamination with micro-organisms (which are possibly present in the other partner) by using barrier contraception (condoms, spermicides with cervical caps or diaphragms).

However, the "safety"is variable and depends on several factors (consistency of use, slipping-off condoms, breakage, etc.). The safety factor or condom use, for example, has to be seen in the right perspective: if sperm manage to enter the genital tract when a condom breaks and cause a pregnancy, so can STD micro-organisms enter the genital tract and cause PID.

PID may develop due to particular circumstances and not every contamination with a STD will automatically lead to PID. Certain hygienic factors play a role and the following should be kept in mind:

How is PID treated?

Acute PID requires immediate treatment with antibiotics, started as soon as specimen has been obtained to determine which antibiotics the causative organism is sensitive to. Treatment can be started before the results of these tests are back and the antibiotics changed later, if necessary.

A patient with a serious case will be treated in hospital with intravenous antibiotics, whereas patients with milder cases can be treated with oral antibiotics on an outpatient basis.

Immediate treatment is essential since the risk of infertility increases with increasing inflammation.
Many women with PID have sexual partners who have no symptoms, even though these partners may be infected with organisms which could cause PID. Because of the risk of reinfection, sexual partners should be examined, even if they do not exhibit symptoms, and treated whenever necessary.

What is the outcome of PID?

A woman who has had PID more than once is likely to suffer scarring of the Fallopian tubes, which may partially or completely block the normal passage between the uterus and the ovaries.

This can lead to an ectopic pregnancy and also increases the risk of infertility. If an ectopic pregnancy occurs, the fertilised egg implants in the Fallopian tube rather than in the uterus. These pregnancies are not viable and can lead to serious complications if not diagnosed early.

Abscesses may develop in the tubes, ovaries and elsewhere in the pelvis during the acute or subacute stage of PID. If these do not respond to antibiotic treatment they often have to be removed surgically.

PID can also cause chronic pelvic pain and this condition may sometimes be improved with surgery. With each episode of reinfection and recurrence of PID, the risk of infertility is increased.

When to see a doctor:

A doctor should be consulted if a woman suffers from abdominal pain or tenderness, a vaginal discharge with an offensive smell, menstrual cramps or a high fever. 

A doctor should also be consulted if an IUD was recently inserted and it is causing discomfort, or if a woman had unprotected sex with a partner who she thinks may have an STD.

Do you have any experience or know of someone who has had experience with PID? Share your experiences with us by emailing You are welcome to remain anonymous.

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