| Medical Dictionary |
A Medical Dictionary of Medical Terminology
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Sexually transmitted diseases (STDs), or sexually transmitted infections (STIs), are infections that are passed from one person to another through sexual contact. They are usually spread during vaginal, oral, or anal sex. But sometimes they can spread through other sexual contact involving the penis, vagina, mouth, or anus. This is because some STDs, like herpes and HPV, are spread by skin-to-skin contact.
Some STDs can be passed from a pregnant person to the baby, either during pregnancy or when giving birth. Other ways that STDs may be spread include during breastfeeding, through blood transfusions, or by sharing needles.
There are more than 20 types of STDs, including:
STDs can be caused by bacteria, viruses, and parasites.
Who is affected by sexually transmitted diseases (STDs)?Most STDs affect both men and women, but in many cases the health problems they cause can be more severe for women.If an STD is passed to a baby, it can cause serious health problems.
What are the symptoms of sexually transmitted diseases (STDs)?STDs don't always cause symptoms or may only cause mild symptoms. So it is possible to have an infection and not know it. And even without symptoms, STDs can still be harmful and may be passed on during sex.
If there are symptoms, they could include:
If you are sexually active, you should talk to your health care provider about your risk for STDs and whether you need to be tested. This is especially important since many STDs do not usually cause symptoms.
Some STDs may be diagnosed during a physical exam or through microscopic examination of a sore or fluid swabbed from the vagina, penis, or anus. Blood tests can diagnose other types of STDs.
What are the treatments for sexually transmitted diseases (STDs)?Antibiotics can treat STDs caused by bacteria or parasites. There is no cure for STDs caused by viruses, but medicines can often help with the symptoms and lower your risk of spreading the infection.
Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading STDs. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
There are vaccines to prevent HPV and hepatitis B.
Can sexually transmitted diseases (STDs) be prevented?Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading STDs. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
There are vaccines to prevent HPV and hepatitis B.
Centers for Disease Control and Prevention
Teen sexual health is about how sex affects your physical and emotional health. It means knowing how to form healthy relationships and making decisions about sex that are right for you.
As your body changes during puberty, how you think, feel, and interact with others also changes. You may have new feelings and thoughts about sex. Understanding who you're becoming as a sexual young adult is also part of teen sexual health. For some teens, that includes understanding gender identity, gender expression, and sexual orientation.
For all teens, taking responsibility for sexual health is part of growing up. Whether you choose to have sex or wait, responsibility includes knowing about:
Sexually transmitted diseases (STDs), or sexually transmitted infections (STIs), are caused by bacteria, viruses, and parasites that spread from person to person, usually during vaginal, oral, or anal sex. Some STDs are spread by skin-to-skin contact. Without treatment, some STDs can cause long-term health problems.
There are more than 20 types of STDs, including:
STDs don't always cause symptoms. So it is possible to have an infection without knowing it and then pass it on to someone else. The only way to know for sure whether you have an STD is to get tested.
How can I reduce my chances of getting a sexually transmitted disease (STD)?The most reliable way to avoid infection is to not have vaginal, oral, or anal sex. Saying "no" to sex is the right choice for many teens.
If you decide to have sex, "safer sex" practices will lower your chance of getting an STD. They include:
The only sure way to avoid pregnancy is not to have vaginal sex.
If you decide to have vaginal sex, birth control can help prevent pregnancy. There are many types of birth control that work in different ways. Your health care provider can help you choose birth control that's best for you.
Condoms are the only birth control method that protects against STDs. But condoms alone aren't the most effective form of birth control. It's safest to use condoms with another form of birth control to prevent both STDs and pregnancy.
What is a healthy relationship?Healthy sex starts with a healthy relationship, so it's important to take an honest look at how you and your partner treat each other. Your relationship may be healthy if it includes:
Your relationship may be unhealthy if it includes:
Your decisions about sex can affect your future health. Make sure that you know the facts so you can decide what is right for you.
Chlamydia is a common sexually transmitted disease (STD). It is caused by bacteria called Chlamydia trachomatis. Anyone can get chlamydia. It often doesn't cause symptoms, so people may not know that they have it. Antibiotics can cure it. But if it's not treated, chlamydia can cause serious health problems.
How is chlamydia spread?You can get chlamydia during oral, vaginal, or anal sex with someone who has chlamydia. A pregnant person can also pass chlamydia to the baby during childbirth.
If you've had chlamydia and were treated in the past, you can get re-infected if you have unprotected sex with someone who has it.
Who is more likely to get chlamydia?Chlamydia is more common in young people, especially young women. You are more likely to get infected with chlamydia if you don't consistently use a condom or if you have multiple partners.
What are the symptoms of chlamydia?Chlamydia doesn't usually cause any symptoms. So you may not realize that you have it. But even if you don't have symptoms, you can still pass the infection to others.
If you do have symptoms, they may not appear until several weeks after you have sex with someone who has chlamydia.
Symptoms in women include:
If the infection spreads, you might get lower abdominal (belly) pain, pain during sex, nausea, and fever.
Symptoms in men include:
If the chlamydia infects the rectum (in men or women), it can cause rectal pain, discharge, and bleeding.
How is chlamydia diagnosed?There are lab tests to diagnose chlamydia. Your health care provider may ask you to provide a urine sample. Or your provider may use (or ask you to use) a cotton swab to get a sample from your vagina to test for chlamydia.
Who should be tested for chlamydia?You should go to your provider for a test if you have symptoms of chlamydia or if you have a partner who has an STD. Pregnant people should get a test when they go to their first prenatal visit.
People at higher risk should get checked for chlamydia every year:
In women, an untreated infection can spread to your uterus and fallopian tubes, causing pelvic inflammatory disease (PID). PID can cause permanent damage to your reproductive system. This can lead to long-term pelvic pain, infertility, and ectopic pregnancy. Women who have had chlamydia infections more than once are at higher risk of serious reproductive health complications.
Men often don't have health problems from chlamydia. Sometimes it can infect the epididymis (the tube that carries sperm). This can cause pain, fever, and, rarely, infertility.
Both men and women can develop reactive arthritis because of a chlamydia infection. Reactive arthritis is a type of arthritis that happens as a "reaction" to an infection in the body.
Babies born to infected mothers can get eye infections and pneumonia from chlamydia. It may also make it more likely for your baby to be born too early.
Untreated chlamydia may also increase your chances of getting or giving HIV.
What are the treatments for chlamydia?Antibiotics will cure the infection. You may get a one-time dose of the antibiotics, or you may need to take medicine every day for 7 days. It is important to take all the medicine that your provider prescribed for you. Antibiotics cannot repair any permanent damage that the disease has caused.
To prevent spreading the disease to your partner, you should not have sex until the infection has cleared up. If you got a one-time dose of antibiotics, you should wait 7 days after taking the medicine to have sex again. If you have to take medicine every day for 7 days, you should not have sex again until you have finished taking all of the doses of your medicine.
It is common to get a repeat infection, so you need to get tested again about three months after treatment.
Can chlamydia be prevented?The only sure way to prevent chlamydia is to not have vaginal, anal, or oral sex.
Correct usage of latex condoms greatly reduces, but does not eliminate, the risk of catching or spreading chlamydia. If your or your partner is allergic to latex, you can use polyurethane condoms.
Centers for Disease Control and Prevention
Birth control, also known as contraception, is the use of medicines, devices, or surgery to prevent pregnancy. There are many different types. Some are reversable, while others are permanent. Some types can also help prevent sexually transmitted diseases (STDs).
What are the different types of birth control?There are several different types of birth control, and they work in different ways:
Barrier methodsMale condomA thin sheath that covers the penis to collect sperm and prevent it from entering the woman's body. Condoms that are made of latex and polyurethane can help prevent STDs.Female condomA thin, flexible plastic pouch. Part of the condom is inserted into the vagina before intercourse to prevent sperm from entering the uterus. The uterus, or womb, is the place where the baby grows during pregnancy. Female condoms can also help prevent STDs.Contraceptive spongeA small sponge that you put into the vagina to cover the cervix (the opening of the uterus). The sponge also contains a spermicide to kill sperm.SpermicideA substance that can kill sperm cells. It comes in a foam, jelly, cream, suppository, or film. You put it into the vagina near the uterus. Spermicide can be used alone or with a diaphragm or cervical cap.Diaphragm and cervical capCups that are placed inside the vagina to cover the cervix. They may be used with spermicide. They come in different sizes, so it's important to see your health care provider to figure out which size works best for you.Hormonal methodsOral contraceptives ("the pill")Pills that a woman takes every day. They may contain only progestin or both progestin and estrogen.Contraceptive patchA patch that a woman puts on her skin each week. The patch releases hormones into the bloodstream.Vaginal ringA thin, flexible ring. The woman inserts the ring into the vagina, where it continually releases hormones for three weeks. She takes it out for the fourth week. After that week, she puts in a new ring.Injectable birth controlAn injection of a hormone that a woman gets once every three months. This is done in your provider's office.ImplantA single, thin rod that a provider inserts under the skin of a women's upper arm. It is done in your provider's office. The implant can last for four years.Long-acting reversible contraceptives (LARCs)Intrauterine device (IUD)A small, T-shaped device that a provider inserts into the uterus. This is done in the provider's office. IUDs can last from 3 to 10 years. There are two types: hormonal IUDs and copper IUDs.SterilizationTubal ligationA surgery that prevents a woman from getting pregnant. It is permanent.VasectomyA surgery that prevents a man from getting someone pregnant. It is permanent.What are some other forms of pregnancy prevention?There are some types of pregnancy prevention that do not involve medicines, devices, or surgery:
Other forms of pregnancy preventionFertility awareness-based methodsThey are also called natural rhythm methods. They involve tracking the woman's fertility cycle and avoiding sex or using barrier methods on the days when she is most likely to get pregnant. This method may have higher pregnancy rates than other types.Lactational amenorrhea method (LAM)A form of natural birth control for breastfeeding mothers. It relies on the new mother feeding her baby only breastmilk for up to six months and having no periods or spotting during that time.WithdrawalDuring intercourse, the penis is pulled out of the vagina before ejaculation. The goal is to keep sperm from entering the vagina . But the sperm can leak out before the penis is pulled out, so this method has higher pregnancy rates than other types.What is emergency contraception?Emergency contraception is not a regular method of birth control. But it can be used to prevent pregnancy after unprotected intercourse or if a condom breaks. There are two types:
When deciding which birth control type is right for you, there are many different factors to consider:
Your provider can answer your questions about birth control to help you select the best type for you.
NIH: National Institute of Child Health and Human Development
HIV stands for human immunodeficiency virus. HIV harms your immune system by destroying a type of white blood cell that helps your body fight infection. This puts you at risk for other infections and diseases.
What is AIDS?AIDS stands for acquired immunodeficiency syndrome. It is the final stage of infection with HIV. It happens when the body's immune system is badly damaged because of the virus. Not everyone with HIV develops AIDS.
How does HIV spread?HIV is spread through certain body fluids from a person who has HIV. This can happen:
Anyone can get HIV, but certain groups have a higher risk of getting it:
Factors such as stigma, discrimination, income, education, and geographic region can also affect people's risk for HIV.
What are the symptoms of HIV?The first signs of HIV infection may be flu-like symptoms:
These symptoms may come and go within two to four weeks. This stage is called acute HIV infection.
If the infection is not treated, it becomes chronic HIV infection. Often, there are no symptoms during this stage. If it is not treated, eventually the virus will weaken your body's immune system. Then the infection will progress to AIDS. This is the late stage of HIV infection. Because your immune system is badly damaged, your body cannot fight off other infections, called opportunistic infections (OIs). OIs are infections that happen more frequently or are more severe in people who have weakened immune systems.
Some people may not feel sick during the earlier stages of HIV infection. So the only way to know for sure whether you have HIV is to get tested.
How do I know if I have HIV?A blood test can tell if you have HIV infection. Your health care provider can do the test, or you can use a home testing kit. You can also use the CDC Testing Locator to find free testing sites.
What are the treatments for HIV?There is no cure for HIV infection, but it can be treated with medicines. This is called antiretroviral therapy (ART). ART can make HIV infection a manageable chronic condition. It also reduces the risk of spreading the virus to others.
Most people with HIV live long and healthy lives if they get ART as soon as possible and stay on it. It's also important to take care of yourself. Making sure that you have the support you need, living a healthy lifestyle, and getting regular medical care can help you enjoy a better quality of life.
Can HIV infection be prevented?You can reduce the risk of getting or spreading HIV by:
NIH: National Institutes of Health
Genital herpes is a sexually transmitted disease (STD) caused by a herpes simplex virus (HSV). It can cause sores on your genital or rectal area, buttocks, and thighs. You can get it from having vaginal, anal, or oral sex with someone who has it. The virus can spread even when sores are not present. Mothers can also infect their babies during childbirth.
Symptoms of herpes are called outbreaks. You usually get sores near the area where the virus has entered the body. The sores are blisters which break and become painful, and then heal. Sometimes people do not know they have herpes because they have no symptoms or very mild symptoms. The virus can be more serious in newborn babies or in people with weak immune systems.
Repeat outbreaks are common, especially during the first year. Over time, you get them less often and the symptoms become milder. The virus stays in your body for life.
There are tests that can diagnose genital herpes. There is no cure. However, medicines can help lessen symptoms, decrease outbreaks, and lower the risk of passing the virus to others. Correct usage of latex condoms can reduce, but not eliminate, the risk of catching or spreading herpes. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
Trichomoniasis is a sexually transmitted disease caused by a parasite. It spreads from person to person during sex. Many people do not have any symptoms. If you do get symptoms, they usually happen within 5 to 28 days after being infected.
It can cause vaginitis in women. Symptoms include:
Most men do not have symptoms. If they do, they may have:
Trichomoniasis can increase the risk of getting or spreading other sexually transmitted diseases. Pregnant women with trichomoniasis are more likely to give birth too early, and their babies are more likely have a low birth weight.
Lab tests can tell if you have the infection. Treatment is with antibiotics. If you are infected, you and your partner must be treated.
Correct usage of latex condoms greatly reduces, but does not eliminate, the risk of catching or spreading trichomoniasis. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
Centers for Disease Control and Prevention
A vasectomy is a type of minor surgery that prevents a man from being able to get a woman pregnant. It is a permanent form of birth control.
A vasectomy works by cutting the vas deferens, which are the tubes that carry the sperm out of the testicles. Then the sperm can no longer reach the semen. Semen is the fluid that the penis ejaculates (releases during orgasm). Since there are no sperm, the man cannot get a woman pregnant.
The surgery is quick; it usually takes less than 30 minutes. You will probably be able to go home the same day. You may have some discomfort, bruising, and swelling for a few days. In most cases, you will fully recover in less than a week.
A vasectomy is one of the most effective forms of birth control. But it takes about three months (or about 20 ejaculations) before it is effective. You will still need to use other birth control until you know that your semen doesn't have any more sperm in it. After two to three months, your health care provider will test your semen to make sure that there are no sperm in it.
Having a vasectomy does not affect your sex life. It does not decrease your sex drive. And it will not affect your ability to get an erection or have an orgasm.
Vasectomies can sometimes be reversed, but not always. It is done with a procedure to reconnect the vas deferens. Another option if you decide to have children later might be to have sperm taken from your testicles. The sperm could then be used for in vitro fertilization (IVF). However, this may not always work. It's also important to know that both a vasectomy reversal and IVF are expensive.
Having a vasectomy does not protect you from sexually transmitted diseases (STDS), such as HIV. Using a condom every time you have anal, vaginal, or oral sex is the only way to protect against STDs.
NIH: National Institute of Child Health and Human Development
Genital warts are a sexually transmitted disease (STD) caused by the human papillomavirus (HPV). The warts usually appear as a small bump or group of bumps in the genital area. They are flesh-colored and can be flat or look bumpy like cauliflower. Some genital warts are so small you cannot see them. In women, the warts usually occur in or around the vagina, on the cervix, or around the anus. In men, genital warts are less common. They may have warts on the tip of the penis, around the anus, or on the scrotum, thigh, or groin.
You can get genital warts during oral, vaginal, or anal sex with an infected partner. Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading HPV. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex. HPV vaccines may help prevent some of the HPV infections that cause genital warts.
Your health care provider usually diagnoses genital warts by seeing them. The warts might disappear on their own. If not, your health care provider can treat or remove them. HPV stays in your body even after treatment, so warts can come back.
Dept. of Health and Human Services Office on Women's Health
Gonorrhea is a sexually transmitted disease. It is most common in young adults. The bacteria that cause gonorrhea can infect the genital tract, mouth, or anus. You can get gonorrhea during vaginal, oral, or anal sex with an infected partner. A pregnant woman can pass it to her baby during childbirth.
Gonorrhea does not always cause symptoms. In men, gonorrhea can cause pain when urinating and discharge from the penis. If untreated, it can cause problems with the prostate and testicles.
In women, the early symptoms of gonorrhea often are mild. Later, it can cause bleeding between periods, pain when urinating, and increased discharge from the vagina. If untreated, it can lead to pelvic inflammatory disease, which causes problems with pregnancy and infertility.
Your health care provider will diagnose gonorrhea with lab tests. Treatment is with antibiotics. Treating gonorrhea is becoming more difficult because drug-resistant strains are increasing. Correct usage of latex condoms greatly reduces, but does not eliminate, the risk of catching or spreading gonorrhea. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
Centers for Disease Control and Prevention