Approximately 20 different
infections are known to be transmitted through sexual contact. Here are
descriptions of some of the most common and well known:
- Chlamydia
- Gonorrhea
- Genital Herpes
- HIV/AIDS
- Human Papillomavirus (HPV)
- Syphilis
- Bacterial Vaginosis
- Trichomoniasis
- Viral Hepatitis
Chlamydia
Chlamydia1 (pronounced kla-MID-ee-uh)
is a common STD/STI caused by the bacterium Chlamydia trachomatis.
Chlamydia can be transmitted during vaginal, oral, or anal sexual contact with
an infected partner. While many individuals will not experience symptoms,
chlamydia can cause fever, abdominal pain, and unusual discharge of the penis
or vagina.
In women, whether or not they are having
symptoms and know about their infection, chlamydia can cause pelvic
inflammatory disease (PID). In PID, the untreated STD/STI progresses and
involves other parts of the woman's reproductive system, including the uterus
and fallopian tubes. This progression can lead to permanent damage to the
woman's reproductive organs. This damage may lead to ectopic pregnancy (in
which the fetus develops in abnormal places outside of the womb, a condition
that can be life-threatening) and infertility
Gonorrhea
Gonorrhea (pronounced gon-uh-REE-uh) is caused by the bacterium Neisseria gonorrhoeae, which can grow rapidly and multiply easily in the warm, moist areas of the reproductive tract. The most common symptoms of gonorrheal infection are a discharge from the vagina or penis and painful or difficult urination.
Genital
Herpes
Genital herpes is a contagious infection caused by the herpes simplex virus (HSV). There are
two different strains, or types, of HSV: herpes simplex virus type 1 (HSV-1)
and type 2 (HSV-2). Both can cause genital herpes, although most cases of
genital herpes are caused by HSV-2.
When symptomatic, HSV-1 usually appears as fever blisters or cold sores on the
lips, but it can also infect the genital region through oral-genital or
genital-genital contact. Symptomatic HSV-2 typically causes painful, watery
skin blisters on or around the genitals or anus. However, substantial numbers
of people who carry these viruses have no or only minimal signs or symptoms.
HIV/AIDS
HIV,
or the human immunodeficiency virus,is the virus that causes AIDS (acquired
immunodeficiency syndrome). HIV destroys the body's immune system by killing
the blood cells that fight infection. Once HIV destroys a substantial
proportion of these cells, the body's ability to fight off and recover from
infections is compromised. This advanced stage of HIV infection is known as
AIDS.
People whose HIV has progressed to
AIDS are very susceptible to opportunistic infections that do not normally make
people sick and to certain forms of cancer.
AIDS can be prevented by early
initiation of antiretroviral therapy in those with HIV infection. Transmission
of the virus primarily occurs during unprotected sexual activity and by sharing
needles used to inject intravenous drugs, although the virus also can spread
from mother to infant during pregnancy, delivery, and breastfeeding.
Human
Papillomavirus (HPV)
HPV
is the most common STD/STI. More than 40 HPV types exist, and all of them can
infect both men and women. The types of HPVs vary in their ability to cause
genital warts; infect other regions of the body, including the mouth and
throat; and cause cancers of the cervix, vulva, penis, and mouth.
Syphilis
Syphilis infections, caused by the bacterium Treponema
pallidum, are passed from person to person during vaginal, anal, or oral sex
through direct contact with sores, called chancres. Between 2001 and 2009, the
Centers for Disease Control and Prevention (CDC) data show that the syphilis
rate increased each year. Those people at highest risk for syphilis include men
having sex with both men and women and people residing in the south. The first sign of syphilis is a chancre, a
painless genital sore that most often appears on the penis or in and around the
vagina. Beyond being the first sign of a syphilis infection, chancres make a
person two to five times more likely to contract an HIV infection.
Bacterial
Vaginosis
Bacterial vaginosis
is a common, possibly sexually transmitted, vaginal infection in women of
reproductive age. While it is healthy and normal for a vagina to have bacteria,
just like the skin, mouth, or gastrointestinal (GI) tract, sometimes changes in
the balance of different types of bacteria can cause problems.
Bacterial vaginosis occurs when
problematic bacteria that are normally present only in small amounts increase
in number, replace normal vaginal lactobacilli bacteria, and upset the usual
balance. This situation becomes more likely if a woman douches frequently or
has new or multiple sexual partners. The most common sign of a bacterial
vaginosis infection is a thin, milky discharge that is often described as
having a "fishy" odor. However, some women will have no symptoms at
all.
Trichomoniasis
Trichomoniasis12 (pronounced trik-uh-muh-NAHY-uh-sis)
infection is caused by the single-celled protozoan parasite Trichomonas
vaginalis and is common in young, sexually active women. The parasite also
infects men, though less frequently. The parasite can be transmitted between
men and women as well as between women whenever physical contact occurs between
the genital areas. Although Trichomonas infections do not always cause
symptoms, they can cause frequent, painful, or burning urination in men and
women as well as vaginal discharge, genital soreness, redness, or itching in
women.
Viral
Hepatitis
Viral hepatitis is a serious liver
disease that can be caused by several different viruses, which can be
transmitted through sexual contact.
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