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Overview

Sexually transmitted infections (STIs) are diseases that spread through sexual contact. These infections are caused by tiny organisms like bacteria, viruses, or parasites. When one person has an STI, they can pass it to another person through bodily fluids like blood, semen, vaginal fluids, or other fluids.

Sometimes, STIs can spread in other ways, too. A pregnant person can pass an STI to their baby during pregnancy or childbirth. STIs can also be spread through blood transfusions or sharing needles.

It's important to know that many STIs don't show any noticeable symptoms. This means a person can have an STI and not know it, and they could pass it on to someone else without realizing it. Even if someone seems completely healthy, they could still carry an STI.

Symptoms

Sexually transmitted infections (STIs) can sometimes have no noticeable symptoms. This means a person might not realize they have an STI until they develop problems related to the infection, or until a partner is diagnosed.

Many STIs can cause various symptoms. These might include:

  • Physical sores or bumps: These can appear on the genitals, mouth, or rectum.
  • Urination problems: Painful or burning sensations during urination are common.
  • Discharge from the penis: Unusual amounts of fluid coming from the penis could indicate an STI.
  • Vaginal discharge: Changes in the amount, color, or smell of vaginal discharge can be a sign.
  • Unusual vaginal bleeding: Bleeding that isn't part of a normal menstrual cycle could be a symptom.
  • Pain during sex: Discomfort or pain during sexual activity can be a warning sign.
  • Swollen lymph nodes: Swollen glands, particularly in the groin, but sometimes elsewhere in the body, can indicate an infection.
  • Abdominal pain: Pain in the lower part of the belly can be a symptom of some STIs.
  • Fever: A high temperature could be a sign of an infection.
  • Skin rash: A rash on the torso, hands, or feet might be a sign of certain STIs.

Symptoms of an STI can appear just a few days after exposure. However, sometimes it takes a long time, even years, before any noticeable problems develop. This depends on the specific STI.

When to see a doctor

If you're sexually active and think you might have a sexually transmitted infection (STI), see a doctor right away. Also, go to a doctor immediately if you have any symptoms of an STI, like sores, unusual discharge, or pain.

It's a good idea to schedule a visit with a healthcare provider as soon as you're thinking about becoming sexually active, or by the time you turn 21, whichever comes first. This first visit is important for getting information about STIs, safe sex practices, and any other health concerns. Even more importantly, you should make an appointment before you start having sex with a new partner. This visit lets you talk with a doctor about safe sex and any questions you may have.

Causes

Sexually transmitted infections (STIs) are infections that can be passed from one person to another during sexual contact. These infections can be caused by different types of germs:

  • Bacteria: Some STIs are caused by bacteria. Examples include gonorrhea, syphilis, and chlamydia. These infections can often be cured with antibiotics if caught early. It's important to get tested and treated if you think you might have one of these bacterial infections.

  • Parasites: Other STIs are caused by tiny organisms called parasites. One example is trichomoniasis. Like bacterial infections, these parasitic infections are usually treatable with medication.

  • Viruses: Still other STIs are caused by viruses. These viruses can be harder to get rid of completely. Common viral STIs include human papillomavirus (HPV), the herpes simplex virus (often causing herpes), and the human immunodeficiency virus (HIV), which leads to AIDS. While some viral STIs can't be cured, treatments can help manage symptoms and prevent complications. For example, HIV can be controlled with medication, allowing people with HIV to live long and healthy lives.

Risk factors

Sexually transmitted infections (STIs) can affect anyone who is sexually active. Understanding the risks is crucial for staying healthy.

Several factors increase the chance of getting an STI:

Unprotected Sex: Having vaginal or anal sex without a condom (latex or polyurethane) significantly raises the risk. This is because an infected partner can transmit the infection. Natural membranes are not reliable protection against some STIs. Even if you use a condom, not using it correctly or every time you have sex increases the risk.

Oral sex is generally considered less risky, but it's still possible to get or spread an STI. Using a condom (latex or polyurethane) or a dental dam (a thin, square piece of latex or silicone rubber) is important if you're engaging in oral sex.

Multiple Partners: The more sexual partners you have, the higher your risk of exposure to an STI.

Previous STI Infections: Having one STI can make you more vulnerable to others. Your body's defenses may be weakened.

Forced Sexual Activity: If you've been forced into sexual activity, seeking immediate medical attention is vital. Doctors can provide testing, treatment, and support.

Substance Abuse: Alcohol and drug use can impair judgment and increase the likelihood of risky sexual behaviors, making you more likely to engage in unprotected sex or have multiple partners.

Injection Drug Use: Sharing needles when injecting drugs can transmit serious infections like HIV, hepatitis B, and hepatitis C.

Age: Young adults (ages 15-24) often have higher STI rates than older adults.

Pregnancy and Transmission: Some STIs, like gonorrhea, chlamydia, HIV, and syphilis, can be passed from a pregnant mother to her baby during pregnancy or childbirth. These infections can cause serious health problems or even death in infants. All pregnant women should be tested for STIs and receive necessary treatment.

Important Note: Getting tested regularly for STIs is important, especially if you have multiple partners or engage in risky behaviors. Early detection and treatment are crucial for preventing complications and protecting your health and the health of your partner(s). Open communication with sexual partners about STI status and safe practices is vital.

Complications

Many people with sexually transmitted infections (STIs) don't show any signs in the beginning. This is why getting tested is crucial. Early detection helps prevent problems later on.

Untreated STIs can lead to several health issues, including:

  • Pain in the pelvis: This can be a persistent and uncomfortable feeling in the lower abdomen and/or groin area.

  • Problems during pregnancy: STIs can cause complications for both the mother and the baby during pregnancy, potentially leading to premature birth, low birth weight, or other health issues for the baby.

  • Eye infections: Some STIs can cause inflammation and irritation in the eyes, which can be painful and require treatment.

  • Joint pain (arthritis): Certain STIs can affect the joints, causing pain, swelling, and stiffness.

  • Pelvic inflammatory disease (PID): This is a serious infection of the reproductive organs in women. It can cause pain, fever, and potentially lead to long-term complications.

  • Trouble getting pregnant (infertility): STIs can damage the reproductive organs, making it difficult or impossible for a person to get pregnant or for a man to father a child.

  • Heart problems: In rare cases, some STIs can have long-term effects on the heart, increasing the risk of heart disease.

  • Certain types of cancer: Some STIs, like HPV, are linked to an increased risk of certain cancers, including cervical cancer in women and rectal cancer in both men and women. It's important to remember that getting tested and treated for STIs can significantly reduce these risks.

Prevention

Protecting Yourself from Sexually Transmitted Infections (STIs)

There are several ways to reduce your risk of getting a sexually transmitted infection (STI). Here are some key strategies:

1. Avoid Sex or Limit Partners:

The most effective way to prevent STIs is to abstain from sexual activity altogether. If you choose to be sexually active, limiting the number of sexual partners you have is also important.

2. Choose a Single, Uninfected Partner:

Being in a long-term relationship with one partner who is also uninfected can significantly lower your risk. Both partners need to be committed to only having sex with each other.

3. Wait and Get Tested:

Before engaging in sexual activity with a new partner, it's crucial to get tested for STIs. Wait until you've both received and discussed your test results. Vaginal and anal sex with new partners should be avoided until both partners are tested and the results are negative. Oral sex might be slightly less risky, but it's still important to use protection like condoms or dental dams.

4. Get Vaccinated:

Vaccines can protect you from some STIs. Vaccines are available for certain types of HPV, hepatitis A, and hepatitis B. Talk to your doctor about whether vaccination is right for you.

5. Use Condoms and Dental Dams Consistently and Correctly:

Always use a new latex or polyurethane condom or dental dam for each sexual act. This includes oral, vaginal, and anal sex. Don't use oil-based lubricants with latex condoms or dental dams, as they can weaken the condoms. These barriers are less effective against STIs that involve sores, like herpes or HPV. Condoms and dental dams are important for protecting against STIs, but they aren't a foolproof solution.

6. Other Contraceptives Don't Protect Against STIs:

Birth control pills and intrauterine devices (IUDs) are designed to prevent pregnancy, but they don't protect against STIs.

7. Avoid Alcohol and Drugs:

Alcohol and drug use can impair judgment and increase the likelihood of risky sexual behavior.

8. Communicate with Your Partner:

Open and honest communication with your partner about safe sex practices is essential. Discuss what activities you're both comfortable with and agree on how to protect yourselves.

9. Circumcision for Men:

Studies show that male circumcision can reduce the risk of acquiring HIV from an infected female partner by up to 60%. It might also help prevent other STIs like genital herpes and HPV. This is not a guaranteed protection, however.

10. Pre-Exposure Prophylaxis (PrEP):

For people at very high risk of HIV, there are medications that can significantly lower the risk of infection. These medications, like Truvada and Descovy, must be taken daily as prescribed. These medications are not a substitute for other safer sex practices.

* **Important Note:**  Before starting PrEP, you need an HIV test.  You'll also need regular HIV tests while taking PrEP.  Your doctor will need to check your kidney function before prescribing Truvada and monitor it regularly. If you have hepatitis B, consult with a liver specialist or infectious disease specialist before starting PrEP.  While Truvada can reduce the risk of HIV from sex by nearly 100%, it won't protect against other STIs. Using condoms and other safe sex practices will further lower risk.

By using a combination of these strategies, you can significantly reduce your risk of getting an STI. Remember, consistent and correct use of protection, open communication, and responsible choices are crucial to your sexual health.

Diagnosis

Getting Tested for STIs: A Guide for Everyone

Finding out if you have a sexually transmitted infection (STI) starts with talking to your doctor about your sexual history and any symptoms you're experiencing. If your doctor thinks you might have an STI, they might do a physical exam, looking for things like a rash, sores, or unusual discharge.

Lab tests are key to confirming a diagnosis. These tests can find STIs even if you don't have any symptoms. Different tests look for different infections:

  • Blood tests: These are used to diagnose HIV or late-stage syphilis.
  • Urine samples: Some STIs can be detected using a urine test.
  • Fluid samples: If you have sores or open wounds in your genital area, your doctor may collect fluid samples to identify the specific infection.

Sometimes, people get tested for STIs even if they don't have symptoms. This is called "screening." STI screening isn't always part of a regular checkup, but your doctor might recommend it if your risk factors change. Risk factors could include a new environment (like prison), a history of STIs, or other factors.

Who Should Get Tested?

Experts recommend STI screening for everyone:

  • Everyone (ages 15-65): It's generally a good idea for everyone in this age range to get tested for HIV at least once. People with higher risk factors, such as multiple partners or a history of STIs, should get tested more frequently, maybe even annually. Also, everyone in this age group should get tested for hepatitis B and C at least once.

  • Pregnant women: All pregnant women should be screened for HIV, hepatitis B, chlamydia, and syphilis early in their pregnancy. Women at higher risk for gonorrhea or hepatitis C should also get tested during pregnancy. Hepatitis B screening is recommended for all pregnant women.

  • Women aged 21 and older: A Pap test checks for changes in the cervix that could be precancerous or cancerous. This test is recommended every three years starting at age 21. After age 30, women can have a Pap test and an HPV test every five years, or a Pap test alone every three years, or an HPV test alone every three years.

  • Sexually active women under 25: Regular testing for chlamydia and gonorrhea is recommended for all sexually active women under 25. These tests often use urine or vaginal samples.

  • Reinfection: If you've been treated for chlamydia, it's important to get retested in a few months, and if you have a new partner, you should get retested.

  • Men who have sex with men (MSM): MSM are at higher risk for STIs. Many health organizations recommend regular STI screening, including HIV, syphilis, chlamydia, and gonorrhea, for MSM. Hepatitis B testing may also be recommended.

  • People with HIV: People with HIV have a higher risk of other STIs. Testing for syphilis, gonorrhea, chlamydia, herpes, and hepatitis C is important after an HIV diagnosis. Women with HIV need frequent Pap tests to monitor cervical health. A Pap test should be done soon after diagnosis or within a year of becoming sexually active if under age 21. Then, yearly Pap tests for three years are recommended. After three negative tests, the frequency can return to every three years.

  • New Partners: Before having vaginal or anal sex with a new partner, both partners should be tested for STIs. Testing for genital herpes is generally not recommended unless symptoms are present.

Important Note: It's possible to have an STI and still test negative, especially if you were recently infected. Also, if you have been treated for an STI in the past, it's important to be retested if you have a new sexual partner or experience new symptoms. Open communication with your healthcare provider is vital to managing your sexual health.

Treatment

Understanding Sexually Transmitted Infections (STIs) and Their Treatment

Sexually transmitted infections (STIs), sometimes called sexually transmitted diseases (STDs), can be caused by bacteria, viruses, or parasites. Different types of STIs respond to treatment in different ways.

Bacterial STIs: These are generally easier to cure. Doctors often use antibiotics, sometimes just a single dose, to effectively treat bacterial infections like gonorrhea, syphilis, chlamydia, and trichomoniasis. It's crucial to finish the entire course of antibiotics as prescribed. If you have trouble taking the medicine as directed, talk to your doctor; they might be able to adjust the treatment plan. After finishing treatment and any sores have healed, it's important to avoid sexual contact for at least seven days. For chlamydia, it's also recommended to get retested three months later because reinfection is possible.

Viral STIs: These infections, like herpes and HIV, can be managed with medication, but they can't always be completely cured. Antiviral medications can help keep the virus from getting worse and, in the case of HIV, can keep the infection under control for many years. Even with treatment, a person with HIV can still carry the virus and potentially spread it, though the risk is much lower if they take their medicine as directed. Early treatment for HIV is extremely important for its effectiveness. With proper medication, a person with HIV can often lower their viral load to a level that's undetectable in their blood. This means they can't spread the virus to sexual partners.

Pregnancy and STIs: If a pregnant person has an STI, getting treatment right away is crucial to preventing or reducing the risk of the baby getting infected.

Testing and Retesting: After treatment for any STI, it's important to get retested to ensure the infection is gone and that you haven't been reinfected. Talk to your doctor about how long after treatment you should get retested.

Telling Partners: If you test positive for an STI, it's vital to tell your current and recent sexual partners (in the past three months to a year). This allows them to get tested and treated if needed. This is especially important for STIs like syphilis and HIV, as early detection and treatment are crucial for preventing further spread. Most states have laws requiring certain STIs to be reported to public health departments.

Public Health and Partner Notification: Public health departments often have trained staff who can help confidentially notify sexual partners and arrange for their treatment. This process is important for limiting the spread of STIs and getting people at risk into counseling and treatment. Reinfection is a possibility with some STIs, so informing partners helps reduce this risk.

Coping with an STI Diagnosis: Learning you have an STI can be upsetting. It's natural to feel angry or ashamed, especially if you think you may have infected others. Remember that STIs can have serious health consequences. Here are some tips for coping:

  • Avoid blaming: Don't assume your partner was unfaithful. You or your partner could have gotten the infection from a previous partner.
  • Be open and honest with healthcare providers: Healthcare professionals are there to help, not to judge. All information shared with them is confidential.
  • Contact your local health department: Local health departments often have STI programs that provide confidential testing, treatment, and partner notification services. While resources may vary, they can be a valuable resource.

Remember, seeking medical attention promptly is essential for treating STIs and preventing further health complications. Early detection and treatment are key to managing STIs effectively and protecting your health and the health of your partners.

Preparing for your appointment

Talking to your doctor about your sex life is important for getting the best possible care. It's a sensitive topic, but it's crucial for accurate diagnosis and treatment. Don't worry; your doctor is trained to handle this.

If you're feeling anxious about discussing your sexual experiences, it might help to write them down beforehand. This way, you can review your thoughts and feelings before your appointment and feel more prepared to share the information with your healthcare provider.

Preparing for Your Appointment:

  • Check for pre-appointment instructions: When scheduling, ask if there are any specific steps you need to take before your visit.
  • Note all symptoms: Write down every symptom you're experiencing, even if you think it's unrelated to the reason you're seeing the doctor. Details like when the symptoms started, how often they occur, and how severe they are will help your doctor.
  • List your medications: Make a complete list of all the medicines, vitamins, and supplements you're taking. This includes over-the-counter medications.
  • Prepare questions: Write down any questions you have for your doctor. This will help you get the information you need.

Important Questions to Ask Your Doctor:

  • What is the name of the infection(s)?
  • How is this infection spread?
  • Could this infection affect my ability to have children?
  • If I get pregnant, could my baby be affected?
  • Is it possible to get this infection again?
  • Could I have gotten this infection from someone I had sex with just once?
  • Could I give this infection to someone I have sex with just once?
  • How long have I likely had this infection?
  • I have other health conditions. How can I best manage them together?
  • Should I avoid sexual activity while I'm being treated?
  • Does my partner need to see a doctor too?

Providing a Complete Picture:

Giving your doctor a thorough picture of your symptoms and sexual history is essential for proper diagnosis and treatment. Your doctor might ask you questions about:

  • Your symptoms: What symptoms prompted you to see a doctor? How long have you had these symptoms?
  • Your sexual activity: Are you sexually active with men, women, or both? How many partners do you have currently? How long have you been with your current partner(s)?
  • Drug use: Have you ever injected drugs? Have you ever had sex with someone who injects drugs?
  • Prevention: What do you do to protect yourself from sexually transmitted infections (STIs)? What do you do to prevent pregnancy?
  • Past diagnoses: Has a doctor or nurse ever told you that you have chlamydia, herpes, gonorrhea, syphilis, or HIV? Have you ever had a genital discharge, sores, painful urination, or an infection of your sex organs?
  • Recent sexual activity: How many sexual partners did you have in the last year and in the last two months? When was your most recent sexual encounter?

Important Considerations:

If you think you might have an STI, it's best to avoid sexual activity until you've discussed it with your doctor. If you do engage in sexual activity before seeing a doctor, practice safe sex, such as using condoms. This helps protect you and your partner(s).

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