What can happen if chlamydia is not treated?
If chlamydia is left untreated, it can spread to different parts of your body and do additional damage. If chlamydia spreads to the eyes, it can cause eye infections and blindness. In women, the infection can spread to the uterus and fallopian tubes. The infection can scar these areas and lead to infertility or an ectopic pregnancy (a pregnancy that occurs outside of the uterus). If an infected mother transfers the infection to her baby, it can cause pneumonia or an eye infection that could result in blindness. In men, chlamydia can spread to the testicles and prostate. This can cause swelling, painful urination, fever and pain in the lower back.