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An Introduction to Sexually Transmitted Diseases

Sexually transmitted diseases (STDs), once called venereal diseases, are among the most common infectious diseases in the United States today. More than 20 STDs have now been identified, and they affect more than 13 million men and women in this country each year. 

Understanding the basic facts about STDs – the ways in which they are spread, their common symptoms, and how they can be treated– is the first step toward prevention.  It is important to understand at least five key points about all STDs in this country today:

  1. STDs affect men and women of all backgrounds and economic levels. They are most prevalent among teenagers and young adults. Nearly two-thirds of all STDs occur in people younger than 25 years of age.
  2. The incidence of STDs is rising, in part because in the last few decades, young people have become sexually active earlier yet are marrying later. In addition, divorce is more common. The net result is that sexually active people today are more likely to have multiple sex partners during their lives and are potentially at risk for developing STDs.
  3. Most of the time, STDs cause no symptoms, particularly in women. When and if symptoms develop, they may be confused with those of other diseases not transmitted through sexual contact. Even when an STD causes no symptoms, however, a person who is infected may be able to pass the disease on to a sex partner. That is why many doctors recommend periodic testing or screening for people who have more than one sex partner.
  4. Health problems caused by STDs tend to be more severe and more frequent for women than for men, in part because the frequency of asymptomatic infection means that many women do not seek care until serious problems have developed.
  1. When diagnosed and treated early, many STDs can be treated effectively. Some infections have become resistant to the drugs used to treat them and now require newer types of antibiotics. Experts believe that having STDs other than AIDS increases one's risk for becoming infected with the AIDS virus.

HIV Infection and AIDS

AIDS (acquired immunodeficiency syndrome) was first reported in the United States in 1981. It is caused by the human immunodeficiency virus (HIV), a virus that destroys the body's ability to fight off infection. An estimated 900,000 people in the United States are currently infected with HIV. People who have AIDS are very susceptible to many life-threatening diseases, called opportunistic infections, and to certain forms of cancer. Transmission of the virus primarily occurs during sexual activity and by sharing needles used to inject intravenous drugs. Although accurate numbers are not available, the iincidence of AIDS seems to be very low in Fresno.

Chlamydial Infection

This infection is now the most common of all bacterial STDs in Fresno.  In both men and women, chlamydial infection may cause an abnormal genital discharge and burning with urination. In women, untreated chlamydial infection may lead to pelvic inflammatory disease, one of the most common causes of ectopic pregnancy and infertility in women. Many people with chlamydial infection, however, have few or no symptoms of infection. Once diagnosed with chlamydial infection, a person can be treated with an antibiotic.

Genital Herpes

Genital herpes affects an estimated 60 million Americans. Approximately 500,000 new cases of this incurable viral infection develop annually. Herpes infections are caused by herpes simplex virus (HSV). The major symptoms of herpes infection are painful blisters or open sores in the genital area. These may be preceded by a tingling or burning sensation in the legs, buttocks, or genital region. The herpes sores usually disappear within two to three weeks, but the virus remains in the body for life and the lesions may recur from time to time. Severe or frequently recurrent genital herpes is treated with one of several antiviral drugs that are available by prescription. These drugs help control the symptoms but do not eliminate the herpes virus from the body. Suppressive antiviral therapy can be used to prevent occurrences and perhaps transmission. Women who acquire genital herpes during pregnancy can transmit the virus to their babies. Untreated HSV infection in newborns can result in mental retardation and death.

Genital Warts

Genital warts (also called venereal warts or condylomata acuminata) are caused by human papillomavirus (HPV), a virus related to the virus that causes common skin warts. Genital warts usually first appear as small, hard painless bumps in the vaginal area, on the penis, or around the anus. If untreated, they may grow and develop a fleshy, cauliflower-like appearance. Genital warts infect an estimated 1 million Americans each year. In addition to genital warts, certain high-risk types of HPV cause cervical cancer and other genital cancers. Genital warts are treated with a topical drug (applied to the skin), by freezing, or if they recur, with injections of a type of interferon. If the warts are very large, they can be removed by surgery.  At the California Pregnancy Center we use the "Thin Prep" method of Pap smears, which can also detect the presence of HPV.

Gonorrhea

Approximately 400,000 cases of gonorrhea are reported to the U.S. Centers for Disease Control and Prevention (CDC) each year in this country. The most common symptoms of gonorrhea are a discharge from the vagina or penis and painful or difficult urination. The most common and serious complications occur in women and, as with chlamydial infection, these complications include PID, ectopic pregnancy, and infertility. Historically, penicillin has been used to treat gonorrhea, but in the last decade, four types of antibiotic resistance have emerged. New antibiotics or combinations of drugs must be used to treat these resistant strains.

Syphilis

The incidence of syphilis has increased and decreased dramatically in recent years, with more than 11,000 cases reported in 1996. The first symptoms of syphilis may go undetected because they are very mild and disappear spontaneously. The initial symptom is a chancre; it is usually a painless open sore that usually appears on the penis or around or in the vagina. It can also occur near the mouth, anus, or on the hands. If untreated, syphilis may go on to more advanced stages, including a transient rash and, eventually, serious involvement of the heart and central nervous system. The full course of the disease can take years. Penicillin remains the most effective drug to treat people with syphilis.

Other diseases that may be sexually transmitted include trichomoniasis, bacterial vaginosis, cytomegalovirus infections, scabies, and pubic lice.

STDs in pregnant women are associated with a number of adverse outcomes, including spontaneous abortion and infection in the newborn. Low birth weight and prematurity appear to be associated with STDs, including chlamydial infection and trichomoniasis. Congenital or perinatal infection (infection that occurs around the time of birth) occurs in 30 to 70 percent of infants born to infected mothers, and complications may include pneumonia, eye infections, and permanent neurologic damage.

What Can You Do to Prevent STDs?

The best way to prevent STDs is to avoid sexual contact with others. If you decide to be sexually active, there are things that you can do to reduce your risk of developing an STD. 

Anyone who is sexually active should:

Anyone diagnosed as having an STD should:

Sometimes people are too embarrassed or frightened to ask for help or information. Most STDs are readily treated, and the earlier a person seeks treatment and warns sex partners about the disease, the less likely the disease will do irreparable physical damage, be spread to others or, in the case of a woman, be passed on to a newborn baby.

If you suspect that you may have an STD, or that your may have been exposed to an STD, please call us immediately at (559) 486 8888.  We will test you using the latest and most accurate technology, and treat you if necessary.


Sexually Transmitted Diseases and the Organisms Responsible
Note: the links below will take you out of our web site, to the NIH site.
Disease Organism(s)

Acquired Immunodeficiency Syndrome (AIDS) Human immunodeficiency virus

Bacterial vaginosis Bacteroides
Gardnerella vaginalis
Mobiluncus spp.
Mycoplasma hominis
Ureaplasma urealyticum

Chancroid Haemophilus ducreyi

Chlamydial infections Chlamydia trachomatis

Cytomegalovirus infections Cytomegalovirus

Genital herpes Herpes simplex virus

Genital (venereal) warts Human papillomavirus

Gonorrhea Neisseria gonorrhoeae

Granuloma inguinale (donovanosis) Calymmatobacterium granulomatis

Leukemia-Lymphoma/Myelopathy HTLV-I and II

Lymphogranuloma venereum Chlamydia trachomatis

Molluscum contagiosum Molluscum contagiosum virus

Pubic lice Phthirus pubis

Scabies Sarcoptes scabiei

Syphilis Treponema pallidum

Trichomoniasis Trichomonas vaginalis

Vaginal yeast infections Candida albicans

home prenatal care birth control CHDP Dr. Lichtenstein
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