Lymphogranuloma Venereum (LGV)

What is LGV?

LGV is an uncommon genital or anorectal (affecting the anus and/or rectum) infection that is caused by a rare strain of the bacteria, Chlamydia trachomatis (this strain is different from the strain that causes genital-urinary tract infection). Patients may develop tender, lymph nodes in the groin, which may open and drain. Patients may report having recently had a genital ulcer that subsequently healed.

How do people get LGV?

LGV can be transmitted during vaginal and anal sex.

What are the symptoms of LGV?

Early symptoms of LGV infection include a small, painless ulcer on the genitals or anus occurring 3-30 days following exposure. More common symptoms include tender lymph nodes in the groin area that may be swollen and inflamed with genital exposure, and/or rectal bleeding and drainage from the rectum with receptive anal exposure.

What complications can result form untreated LGV?

Lymph nodes in the groin area can swell and rupture causing permanent scarring and severe pain. Patients with rectal infections can have pain around the anus, drainage from the rectum, and rectal bleeding. If left untreated, infection can lead to rectal scarring and permanent narrowing (stricture) of the rectum.

How is LGV diagnosed?

The diagnosis of LGV is suspected in a person with typical symptoms and in whom other diagnoses, such as chancroid, herpes and syphilis have been excluded. The diagnosis is usually made by a blood test that detects specific antibodies to chlamydia, which are produced as part of the body's immune response to becoming infected with LGV. Additional tests may be available through your doctor.

What is the treatment for LGV?

Once LGV is diagnosed, it is usually treated with antibiotics. Treatment is with doxycycline by mouth for three weeks. If this is not an option, for example, because of a drug allergy, erythromycin taken by mouth for three weeks can be used as an alternative.

A person who has been exposed to another person with LGV should be examined for signs and symptoms of LGV infection, as well as for chlamydial infection of the genital tract, since the two strains of Chlamydia trachomatis can co-exist. If the exposure occurred within 60 days of the onset of their partner's symptoms of LGV, the exposed person should be treated with a standard chlamydia regimen (azithromycin 1 gm orally x 1 or Doxycycline 100 mg orally twice a day for 7 days).

Special Considerations

Pregnancy

Pregnant and nursing women should be treated with erythromycin. Azithromycin may prove useful for treatment of LGV in pregnancy, but no published data are available regarding its safety and efficacy. Doxycycline is not recommended for pregnant women.

HIV Infection

Persons with both LGV and HIV infection should receive the same treatment regimens as those who are HIV-negative. Prolonged therapy may be required, and delay in resolution of symptoms may occur.

How can LGV be prevented?

There are a number of ways to prevent or reduce the risk of acquiring or transmitting LGV :

  • Practice abstinence. Not having sex is the best protection against LGV and other Sexually Transmitted Diseases (STDs).
  • Having sex with only one uninfected partner who only has sex with you is safe.
  • Limit the number of sex partners.
  • Use a male or female condom.
  • Carefully wash genitals after sex.
  • If you think you are infected, avoid any sexual contact and visit your local STD clinic, hospital or your doctor. Immediately notify all your sexual contacts so they can get examined and treated.

Where can I get more information?

Illinois Department of Public Health
HIV/STD Hotline 800-243-2437 (TTY 800-782-0423)

Centers for Disease Control and Prevention (CDC)
CDC-INFO Hotline (24 hours, 7 days a week)
STD information and referrals to STD Clinics
800-CDC-INFO (800-232-4636)
TTY: 888-232-6348
In English, en Español

CDC National Prevention Information Network (NPIN)
P.O. Box 6003
Rockville, MD 20849-6003
800-458-5231
888-282-7681 Fax
800-243-7012 TTY
E-mail: info@cdcnpin.org

American Social Health Association (ASHA)
P. O. Box 13827
Research Triangle Park, NC 27709-3827
800-783-9877


January 2008



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Illinois Department of Public Health
535 West Jefferson Street
Springfield, Illinois 62761
Phone 217-782-4977
Fax 217-782-3987
TTY 800-547-0466
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