Chlamydia is a common sexually transmitted infection (STI) caused by the bacteria Chlamydia trachomatis. It often has no noticeable symptoms, which is why many people are unaware they are infected. When symptoms do occur, they may include abnormal vaginal or penile discharge, burning sensations during urination, and pain during intercourse. In women, untreated chlamydia can lead to more serious complications such as pelvic inflammatory disease (PID), which can cause infertility. In men, it may lead to inflammation of the testicles or prostate. Chlamydia is easily treatable with antibiotics, but early diagnosis is key to preventing long-term health issues. Regular screening, especially for sexually active individuals, is important, as the infection can be transmitted through vaginal, anal, or oral sex. Practicing safe sex by using condoms can help reduce the risk of transmission.