Chlamydia: Symptoms, Causes, and Effects on Men and Women

Chlamydia is a common sexually transmitted infection (STI) caused by the bacterium Chlamydia trachomatis. It is the most frequently reported bacterial STI in the United States, with an estimated 1.3 million new cases each year. The infection can affect both men and women, targeting different reproductive structures.

How Chlamydia Affects the Body

• In women: The bacteria can infect the cervix, uterus, and fallopian tubes.
• In men: The infection typically involves the urethra, epididymis, and testes.

Common Symptoms

Many people with chlamydia experience no symptoms at all. When symptoms do appear, they usually develop within one to three weeks after exposure.

Symptoms in Women

• Abnormal vaginal discharge
• Painful or burning sensation during urination
• Lower abdominal pain
• Bleeding between periods

Symptoms in Men

• Painful or burning sensation during urination
• Increased frequency of urination
• Discharge from the penis
• Swollen or tender testicles

Complications of Untreated Chlamydia

If left untreated, chlamydia can lead to serious health problems:

• Pelvic inflammatory disease (PID): A serious infection of the female reproductive organs that can cause infertility, ectopic pregnancy, and chronic pelvic pain.
• Epididymitis: Infection of the epididymis (the tube that carries sperm), which can lead to infertility in men.
• Ectopic pregnancy: A life-threatening condition where a fertilized egg implants outside the uterus, usually in a fallopian tube.

Diagnosis and Treatment

Chlamydia is easily diagnosed with a simple urine test or swab. It is curable with a course of antibiotics, typically azithromycin or doxycycline. It is crucial to complete the full course of medication and abstain from sex until treatment is finished. Partners should also be tested and treated to prevent reinfection.

Prevention

• Use condoms consistently and correctly during vaginal, anal, and oral sex.
• Get tested regularly if you are sexually active, especially if you have new or multiple partners.
• Limit your number of sexual partners.

If you think you may have been exposed to chlamydia, see a healthcare provider promptly for testing and treatment.