How Long Can Chlamydia Go Untreated Before It Causes Damage?

Untreated chlamydia can sometimes lead to complications, but there is no reliable timeline for when damage may occur. Pelvic inflammatory disease (PID) can develop during an untreated infection, so prompt testing and treatment are important. In women, untreated chlamydia can lead to PID, which may increase the risk of infertility, chronic pelvic pain, and ectopic pregnancy. Men may develop epididymitis, causing pain and swelling near the testicle. The likelihood of these complications varies, and not everyone with untreated chlamydia develops lasting damage. Chlamydia often causes no symptoms, so people may not know they have it. Screening is recommended for certain age and risk groups; a healthcare professional can help determine how often someone should be tested.