Chlamydia:
Symptoms, Testing, and Treatment

Chlamydia symptoms in men and women, how testing works, treatment with antibiotics, and why screening matters.

What Is Chlamydia

Chlamydia is a bacterial sexually transmitted infection (STI) caused by Chlamydia trachomatis. It is the most frequently reported bacterial STI in the United States, with millions of new cases diagnosed each year. Chlamydia can infect the cervix, urethra, rectum, and throat, and it is transmitted through vaginal, anal, or oral sexual contact.

One of the most important things to understand about chlamydia is that the majority of infected individuals have no symptoms at all. The CDC estimates that up to 75% of women and 50% of men with chlamydia are asymptomatic, which is why routine screening is critical. Without testing, the infection can persist silently for weeks or months, increasing the risk of complications and unknowing transmission to sexual partners.

The good news is that chlamydia is fully curable with antibiotics when detected early. If you are sexually active and concerned about possible exposure, a chlamydia evaluation and treatment visit can provide answers and peace of mind.

Symptoms in Women

When chlamydia does produce symptoms in women, they typically appear one to three weeks after exposure. The most common signs include abnormal vaginal discharge that may be yellowish or have an unusual odor, burning or pain during urination, and pain during sexual intercourse. Some women also experience bleeding between periods or after intercourse.

If the infection spreads beyond the cervix to the upper reproductive tract, it can cause pelvic inflammatory disease (PID). Symptoms of PID include lower abdominal or pelvic pain, fever, nausea, and painful intercourse. PID is a serious complication that can lead to chronic pelvic pain, ectopic pregnancy, and infertility if left untreated.

Because so many cases are asymptomatic, the CDC recommends annual chlamydia screening for all sexually active women under age 25, as well as older women with risk factors such as new or multiple sexual partners. Early detection through STD testing is the most effective way to prevent long-term complications.

Symptoms in Men

Men with chlamydia may notice a white, cloudy, or watery discharge from the tip of the penis, burning or discomfort during urination, and itching or irritation around the urethral opening. These symptoms often develop within one to three weeks of exposure, though many men remain entirely asymptomatic.

If the infection is not treated, it can spread to the epididymis, the coiled tube at the back of the testicle that stores and carries sperm. Epididymitis causes pain, swelling, and tenderness in one or both testicles and, in rare cases, can affect fertility. Rectal chlamydia in men who have receptive anal intercourse may cause rectal pain, discharge, or bleeding.

Men who are sexually active with new or multiple partners should discuss regular STI screening with their provider. Chlamydia and gonorrhea frequently co-occur, so testing for both infections simultaneously is standard practice.

How Chlamydia Spreads

Chlamydia is transmitted through direct sexual contact with an infected person. This includes vaginal, anal, and oral sex. The bacteria are carried in semen and vaginal fluids, and infection can occur even when the penetrating partner does not ejaculate. Chlamydia can also be passed from a pregnant mother to her newborn during vaginal delivery, potentially causing neonatal conjunctivitis or pneumonia.

It is important to understand that chlamydia is not spread through casual contact. You cannot contract it from toilet seats, shared towels, swimming pools, or hugging. The infection requires mucous membrane-to-mucous membrane contact, which is why sexual activity is the sole meaningful route of transmission.

Because asymptomatic carriers can unknowingly transmit the infection, consistent condom use and regular screening are the most effective strategies for reducing spread. Individuals who have been treated for chlamydia can become reinfected if they have sexual contact with an untreated partner, which is why partner treatment is a critical part of the care plan.

Testing and Diagnosis

Chlamydia testing is straightforward and highly accurate. The gold standard is a nucleic acid amplification test (NAAT), which detects the genetic material of the bacteria. For most patients, this involves a simple urine sample. Providers may also use vaginal swabs (which can be self-collected), urethral swabs, rectal swabs, or pharyngeal swabs depending on the sites of potential exposure.

NAAT testing is extremely sensitive and specific, meaning false positives and false negatives are uncommon. Results are typically available within one to three days. Because chlamydia and gonorrhea share similar risk factors and symptoms, most providers will test for both infections at the same time using the same specimen.

The CDC recommends the following screening guidelines:

• Annual screening for all sexually active women under 25
• Annual screening for women 25 and older with risk factors (new or multiple partners, a partner with an STI)
• Screening for all pregnant women at the first prenatal visit
• At least annual screening for men who have sex with men, with more frequent testing (every 3 to 6 months) for those at higher risk

Treatment

Chlamydia is cured with a short course of antibiotics. The current CDC-recommended first-line treatment is doxycycline 100 mg taken orally twice daily for seven days. Alternative regimens include azithromycin 1 gram as a single oral dose, which may be preferred when medication adherence is a concern. For pregnant patients, azithromycin or amoxicillin is used because doxycycline is contraindicated in pregnancy.

It is essential to complete the full course of antibiotics even if symptoms resolve before the medication is finished. Patients should abstain from sexual intercourse for at least seven days after completing treatment (or seven days after single-dose azithromycin) to avoid transmitting the infection. A test of cure is recommended three to four weeks after treatment for pregnant patients and may be considered in other cases.

Because reinfection is common, the CDC recommends retesting approximately three months after treatment regardless of whether the partner was treated. If you have been diagnosed with chlamydia, a provider through chlamydia treatment services can prescribe the appropriate antibiotic and guide you through the full treatment plan.

Prevention and Partner Notification

Consistent and correct use of latex or polyurethane condoms during vaginal, anal, and oral sex significantly reduces the risk of chlamydia transmission. Limiting the number of sexual partners and engaging in mutual monogamy with a tested partner are additional strategies that lower risk. Dental dams can reduce transmission risk during oral sex.

Partner notification is a critical step in chlamydia management. All sexual partners from the 60 days preceding diagnosis (or the most recent partner if the last contact was more than 60 days ago) should be informed, tested, and treated. Many states allow expedited partner therapy (EPT), which permits the treating provider to prescribe antibiotics for the patient's sexual partner without requiring a separate clinical evaluation. Your provider can advise whether EPT is available in your state.

If notifying a partner feels uncomfortable, many local health departments offer confidential partner notification services. The goal is not to assign blame but to break the chain of transmission and protect everyone's health.

Getting Tested Online

Telehealth has made chlamydia screening and treatment more accessible than ever. Through a virtual visit, a board-certified provider can review your symptoms and sexual health history, order laboratory testing at a facility near you, and prescribe antibiotics if your results are positive -- all without an in-person office visit.

The process is simple: you schedule a confidential STD testing visit, discuss your concerns with your provider, and receive a lab order that you can take to a local collection site. Once results are available, your provider contacts you to discuss findings and, if needed, sends a prescription directly to your pharmacy.

InnoCre Telehealth offers discreet, judgment-free sexual health visits for patients in Maryland, Washington, and Delaware. Whether you are experiencing symptoms or simply due for routine screening, getting tested is a responsible step toward protecting your health and the health of your partners.

Frequently Asked Questions