Chlamydia is a common sexually transmitted infection. It can be passed on through oral, vaginal or anal sex. In women, it may present with abnormal vaginal discharge or unscheduled bleeding. Unfortunately, it can also be a silent infection, causing damage even when there are no symptoms and leading to more serious pelvic infection, with scarring of the fallopian tubes. This scarring can affect a woman’s fertility in the longer term. The risk of ectopic pregnancy ( a pregnancy that implants outside the uterus which can be a life-threatening condition) may also be increased. In men, Chlamydia can be silent, or cause irritation of the urethra. Diagnosis is usually made by performing a swab or a urine test, the results of which are usually back within a few days. Treatment involves a short course of antibiotics. All sexually active people are advised to have regular sexual health checks. For more detailed information, read the useful articles below.