OverviewChlamydia trachomatis bacterium.What is chlamydia?Chlamydia is a common sexually transmitted infection (STI) that’s caused by a bacteria called chlamydia trachomatis (C. trachomatis). Once a person's infected, they can spread chlamydia to their partners through intercourse, anal sex or oral sex. Infections can also occur when partners share sex toys that have become contaminated with the bacteria responsible for chlamydia. Show
Chlamydia infections are treatable and curable. But it’s important to receive treatment as soon as possible. Left untreated, chlamydia can lead to serious complications. Who does chlamydia affect?Anyone who’s sexually active can get chlamydia. The bacteria that causes chlamydia gets transmitted through vaginal fluid and semen, which means that people of all genders who have sex can become infected with chlamydia and infect their partners, too. If you’re pregnant and have chlamydia, you can pass it on to your newborn. How common is chlamydia?Chlamydia is the most common STI caused by bacteria. Nearly 2 million cases of chlamydia were reported to the CDC in 2019. The number of infections is likely even higher. When compared to previous years, 2019 infection rates increased among people of all genders, all races and ethnicities, and in every region of the U.S. Most cases of chlamydia are asymptomatic, which means there are no signs or symptoms of an infection. Many of these cases likely go unreported. Certain demographic characteristics (like age, gender and race) may make you more likely to get diagnosed with chlamydia. You’re more likely to get diagnosed if you’re:
Higher rates of transmission among certain groups are less about sexual behavior and more about networks and lack of access to STI prevention resources. For example, chlamydia is more likely to spread from person to person within communities that have higher infection rates. And it’s more likely to spread among groups that don’t have easy access to sex education or barriers to STIs like condoms and dental dams. Symptoms and CausesWhat causes chlamydia?Chlamydia infections spread through sexual contact, when vaginal fluid or semen containing the bacteria that causes chlamydia travels from one person to another. Sexual contact includes all kinds of sex, including sex that doesn’t involve penetration or ejaculation. There are lots of ways that the fluids from one person’s genitals can transmit the bacteria that causes chlamydia.
What doesn’t cause chlamydia?Not all situations involving an exchange of body fluids or intimacy cause chlamydia. You can’t get chlamydia from:
How long can you have Chlamydia without knowing?Chlamydia is sometimes called a silent infection because the majority of people who have chlamydia — regardless of gender — never notice symptoms. People who do notice symptoms often don’t recognize the signs that they have chlamydia until a few weeks after they’ve been infected. Because chlamydia cases are often asymptomatic, it’s easy to spread chlamydia to someone else without realizing it. And it’s easy to miss out on receiving the treatment needed to prevent the serious complications that can result from chlamydia. What are the symptoms of Chlamydia?If you do notice symptoms, you’ll likely experience them differently based on your reproductive anatomy. Many of the symptoms that cisgender women experience can also affect transgender men and nonbinary individuals with vaginas. Many of the symptoms that cisgender men notice can affect transgender women and nonbinary individuals with penises, too. Signs of chlamydia if you have a vaginaChlamydia bacteria often cause symptoms that are similar to cervicitis or a urinary tract infection (UTI). You may notice:
Signs of chlamydia if you have a penisChlamydia bacteria most often infect your urethra, causing symptoms that are similar to nongonococcal urethritis. You may notice:
Signs of chlamydia that all genders may noticeChlamydia can affect parts of your body other than your reproductive organs, such as your:
See your healthcare provider immediately if you notice any of these symptoms. Diagnosis and TestsHow is Chlamydia diagnosed?The most common test for chlamydia is called a nucleic acid amplification test (NAAT). Your provider takes a sample of fluid by doing a vaginal/cervical swab or collecting a urine sample. Then, they send the sample off to a lab to check for the bacteria that causes chlamydia. Your provider may do the test in an office, or they may ask you to do an at-home chlamydia test. Follow your provider’s instructions carefully to ensure you get accurate test results. Because most chlamydia cases are asymptomatic, it’s important to get screened for chlamydia even if you don’t notice any signs of infection. The CDC recommends that sexually active cisgender women who are high-risk for chlamydia get screened regularly. Women, more so than men, experience the most severe complications from chlamydia. Transgender men and nonbinary individuals with vaginas should be screened regularly, too, as they can experience the same complications of chlamydia. You’re considered high-risk if you:
Cisgender men, or trans and nonbinary individuals with penises, should be screened for chlamydia if:
Regardless of your age, reproductive anatomy, or other risk factors — you should discuss your sexual history and sexual activity with your healthcare provider. Your provider is your best resource for offering guidance on how often you should be tested for chlamydia and other STIs. Management and TreatmentHow is chlamydia treated?Chlamydia can be cleared up with antibiotics in about a week or two. But don’t stop taking your medication just because your symptoms improve. Ask your provider about what follow-up is needed to be sure your infection is gone after you’ve finished taking your medicine. Part of your treatment should also include avoiding sexual activities that could cause you to get re-infected and ensuring that any sexual partners who may be infected also get treatment. You should:
Antibiotics can get rid of your infection, but they can’t reverse any harm the bacteria may have caused to your body before treatment. This is why it’s so important to get screened regularly for chlamydia, to see your provider at the first sign of symptoms, and get treatment immediately if you’re infected. What medications are used to get rid of chlamydia?The most common antibiotics used to treat chlamydia infections are:
Make sure you only take antibiotics prescribed by your provider, and take all medications until they’re gone, even if your symptoms improve. Can chlamydia be cured?Yes. Chlamydia can be treated and cured. Some sexually transmitted bacterial infections are starting to become resistant to antibiotics, though, and this makes them harder to treat. With this in mind, the best way to fight chlamydia is to prevent infections from spreading. What can happen if chlamydia isn’t treated?Untreated chlamydia can put your health at risk. Make an appointment with your provider immediately if you notice any symptoms of chlamydia, and get regular STI screenings to avoid complications later. Complications of chlamydia for people with vaginasUntreated chlamydia can cause:
Complications of chlamydia for people with penisesUntreated chlamydia can cause:
Complications of chlamydia that can affect all gendersUntreated chlamydia can:
How soon after treatment will I feel better?You should start to feel better within a week after you begin taking antibiotics. Be sure to continue taking your antibiotics until they’re gone, even if your symptoms improve. PreventionHow can I protect myself from chlamydia?The only way to avoid getting chlamydia is to abstain from having vaginal, anal or oral sex with someone who has a chlamydia infection. And be sure that sex toys that carry the bacteria don’t come in contact with your genitals. It’s not always possible to know if a current or potential partner has chlamydia, though, especially since many people with chlamydia never notice symptoms. With prevention in mind, it’s a good idea to make safer sex practices a regular part of your sex life:
Outlook / PrognosisHow long does chlamydia last?With treatment, chlamydia should go away within a week or two. It’s important to take all antibiotics to fight the infection. Don’t have sex during treatment, or you could get reinfected. Does chlamydia go away on its own?You should never wait for chlamydia to go away on its own. Left untreated, chlamydia can cause serious harm to your health. If you are sexually active, you run the risk of infecting others, putting them at risk of experiencing severe complications as well. Living WithWhen should I see my healthcare provider?When it comes to chlamydia, it’s a good idea to be proactive. Speak with your healthcare provider about your risks of infection. Make a plan to get screened regularly for STIs based on your provider’s recommendations for how often you should be tested. Make an appointment with your healthcare provider if your partner tests positive for chlamydia or if you notice any signs or symptoms that you may be infected. Frequently Asked QuestionsWhat are the first symptoms of chlamydia?Most people who have chlamydia never notice symptoms. But an unusual discharge from your vagina or penis may be a sign that you have a chlamydia infection. Pain, bleeding or a discharge from your bottom can also be a sign of chlamydia. Does chlamydia have a smell?Chlamydia doesn’t always have a smell. But one of the symptoms of chlamydia is an unusual vaginal discharge that has an unpleasant odor. How did I get chlamydia if I didn’t cheat?You can get chlamydia if your partner had vaginal, oral or anal sex with someone who was infected and then had sex with you. People in relationships may have different ideas about what kinds of sexual contact counts as “cheating,” and this miscommunication can lead to infections. Communicate honestly with your partner about what sex you’re having and what sex they’re having. Practice safer sex to reduce your risk of catching chlamydia, and get regularly screened to be sure. A note from Cleveland Clinic It can be embarrassing to talk about anything sex-related with your healthcare provider, including STI prevention. But your sex life is an important part of your health that your provider needs to know about to care for you. Not getting the treatment you need for chlamydia can pose serious risks to your health. Speak with your provider about getting regularly screened for chlamydia and other STIs to reduce your risks of complications. Practice safer sex to prevent the spread of chlamydia. |