Does chlamydia cause testicular pain?

Chlamydia can spread from the urethra to the epididymis, a small structure behind each testicle. Inflammation there may cause one-sided soreness, swelling, warmth, or discomfort that develops with urinary burning or discharge. Some infections cause few symptoms, so the absence of discharge does not exclude chlamydia.

Testicular pain has other possible explanations, including injury, hernia, inflammation, or twisting of the testicle. A clinician may examine the scrotum and arrange urine or swab testing. Read about [Chlamydia](/conditions/chlamydia/) and [Testicular Pain](/symptoms/testicular-pain/) for more context.

Arrange same-day medical advice for new testicular pain, particularly when swelling, fever, urinary symptoms, or recent sexual exposure is present. Avoid sex until assessed if an infection is possible. Wear supportive underwear and use only pain relief that is suitable for you; do not delay assessment by treating the discomfort at home.

Go to an emergency service for sudden or severe testicular pain, a testicle that sits higher than usual, marked swelling, nausea, vomiting, or pain after an injury. Testicular twisting can threaten blood flow and needs immediate assessment. Do not wait for a sexual-health test result when pain is sudden or intense.

Ask whether you need testing for chlamydia and other infections, whether an ultrasound is needed, and when treatment should start. Ask how to notify partners, how long to avoid sex, and which changes should trigger another review.