Chlamydia
Complications -
Women
Pelvic inflammatory Disease (PID) - an inflammation of the fallopian tubes (the tubes along which an egg passes to get to the womb). PID increases the future risk of ectopic pregnancy (a pregnancy outside the womb) or premature birth. if the fallopian tubes are scarred, it can also lead to problems with fertility. Female infertility can often be traced back to infection with chlamydia.
Mother-to-child-transmission (MTCT) - during pregnancy chlamydia can potentially be passed on to the baby, giving it an eye or lung infection. Chlamydia can be safely treated during pregnancy provided the correct antibiotics are prescribed.
Cervicitis - symptoms include a yellowish vaginal discharge and pain during sex. in long-term cervicitis the cervix becomes very inflammed and cysts can develop and become infected. This can lead to deep pelvic pain and backache.
Men
Complications caused by chlamydia in men are uncommon, but if left untreated a long-term infection may lead to:
Epididymitis - painful inflammation of the tube system that is part of the testicles, which can lead to infertility.
Urethritis - inflammation of the urine tube (urethra), causing a yellow or clear pus-like discharge to collect at the tip of the penis. Left untreated it can lead to a narrowing of the urethra, which can affect the ability to urinate easily and can potentially cause kidney problems.
Men and women
Complications that can occur in both sexes are:
Reiters syndrome - can cause inflammation of the eyes and joints and sometimes a rash on the genitals and soles of the feet.
Appendicitis (inflammation of the appendix).Lymphogranuloma venereum, an infection of the lymph nodes and lymphatics. it usually presents with genital ulceration and swollen lymph nodes in the groin, but it may also manifest as proctitis (inflammation of the rectum), fever or swollen lymph nodes in other regions of the body.
Reference:
For further reference regarding the treatment guideline by CDC please read at - Sexually Transmitted Diseases Treatment Guidelines 2006. MMWR 2006;55(No. RR-11).