Overview
Chlamydia is one of the most common sexually transmitted infections (STIs) worldwide, particularly affecting young adults. It is caused by the bacterium Chlamydia trachomatis. Many people with chlamydia have no symptoms, making it easy to spread unknowingly. If left untreated, it can cause serious complications, including pelvic inflammatory disease (PID), infertility, and ectopic pregnancy in women, and epididymitis in men.
Symptoms
Most people with chlamydia do not experience any symptoms. When symptoms do occur, they may appear within one to three weeks after exposure and can include:
In women: Abnormal vaginal discharge, pain during urination, lower abdominal pain, bleeding between periods, and pain during intercourse.
In men: Penile discharge, pain during urination, testicular pain or swelling, and rectal pain or discharge.
Other sites: Chlamydia can also infect the rectum (causing rectal pain, discharge, or bleeding), the throat (usually asymptomatic), and the eyes (causing redness, pain, and discharge).
Causes
Chlamydia is transmitted through sexual contact (vaginal, anal, or oral) with an infected person. It can also be passed from an infected mother to her baby during childbirth, potentially causing pneumonia or eye infection in the newborn. The infection is caused by the bacterium Chlamydia trachomatis, which can infect the cervix, urethra, rectum, throat, and eyes.
Treatment
Chlamydia is easily treated with antibiotics. The most common treatment regimens include azithromycin (single dose) or doxycycline (twice daily for seven days). It is crucial to complete the full course of antibiotics as prescribed, even if symptoms disappear. Sexual partners should also be tested and treated to prevent reinfection. Individuals should abstain from sexual activity until they and their partners have completed treatment and symptoms have resolved.
Regular screening is recommended for sexually active individuals, especially those under 25, and for pregnant women. Early detection and treatment can prevent serious complications.
When to See a Doctor
You should see a doctor if you have symptoms suggestive of chlamydia, such as abnormal discharge, pain during urination, or pelvic pain. Also, get tested if you have had unprotected sex with a new partner or if you are pregnant and have risk factors. Regular screening is recommended for sexually active people under 25, and for older individuals with risk factors such as multiple partners or a partner with an STI.