What Is Chlamydia?
Chlamydia is a common sexually transmitted infection (STI) caused by the Chlamydia trachomatis bacteria. It can infect the genitals, rectum, and throat, and is transmitted primarily through unprotected vaginal, anal, or oral sex. Chlamydia is often symptomless—especially in women—which is why regular testing is vital for early detection and prevention.
How Chlamydia Is Transmitted
Chlamydia spreads through contact with infected bodily fluids during sexual activity. This includes vaginal, anal, or oral sex—even if the person carrying the infection has no symptoms. Since chlamydia is easily passed between partners and often goes undetected, consistent condom use and routine STI testing are essential. Reinfection can occur if both partners are not treated, highlighting the importance of coordinated care and open communication.
Common Chlamydia Symptoms
Symptoms of chlamydia may vary by individual and body part infected—but many people, especially women, experience no symptoms at all. Recognizing early signs, when they do appear, helps prevent complications.
In Men:
• Pain or burning when urinating
• Discharge from the penis (often clear or cloudy)
• Pain or swelling in the testicles
• Rectal pain, discharge, or bleeding
• Sore throat (if infected via oral sex)
In Women:
• Abnormal vaginal discharge
• Burning sensation when urinating
• Pain during sex or lower abdominal pain
• Bleeding between periods
• Rectal pain, discharge, or bleeding
• Sore throat (if infected via oral sex)
Asymptomatic cases are common, which is why periodic testing, even without symptoms, is one of the best tools for maintaining your sexual health. Up to 70% of men and women show no symptoms at all.
Why You Should Get Tested
Left untreated, chlamydia can cause serious long-term health issues, including pelvic inflammatory disease (PID), infertility, and an increased risk of HIV. It’s also easily spread to others. The upside? Testing is simple and accurate, and when detected early, chlamydia is completely curable with antibiotics.
