Does Chlamydia Cause Back Pain? The Answer Explained

Chlamydia is a common bacterial sexually transmitted infection (STI) that often presents without noticeable symptoms. Understanding its potential effects, including its relationship to back pain, is important for health.

Common Symptoms of Chlamydia

Chlamydia is often called a “silent infection” because 50% to 70% of cases show no symptoms. When symptoms do appear, they typically manifest within one to three weeks after exposure, though they can sometimes take several months to emerge. This asymptomatic characteristic contributes to its widespread transmission and often delays diagnosis.

In women, common symptoms may include unusual vaginal discharge, which might be yellow or have a strong odor. Other signs can involve bleeding after sex or between menstrual periods, a burning sensation during urination, and pain in the lower abdomen or pelvis.

For men, typical indicators include a clear, cloudy, or watery discharge from the penis, along with a burning sensation during urination. Men may also experience burning or itching around the testicles and penis, or pain and swelling in one or both testicles.

Chlamydia can also infect other areas of the body through sexual contact. Rectal infections might cause pain, discharge, or bleeding. Oral or throat infections are also possible, often remaining asymptomatic, but can sometimes lead to a sore throat. Eye redness, pain, or discharge can occur if the infection spreads to the eyes.

Is There a Link to Back Pain?

Chlamydia does not typically cause direct back pain as a primary symptom. However, complications from untreated chlamydia can lead to conditions that manifest as back pain or referred pain.

One such complication is reactive arthritis, an autoimmune response to an infection elsewhere in the body. Reactive arthritis involves joint inflammation that can affect various parts of the body, including the lower back and buttocks. This condition develops as a “reaction” to the bacterial infection, often occurring weeks after the initial chlamydia infection, even after the original infection has cleared. While most people infected with chlamydia do not develop reactive arthritis, those who do may experience pain and swelling in joints like the knees, ankles, and feet, in addition to lower back discomfort. Inflammation of the spine (spondylitis) or the joints connecting the spine to the pelvis (sacroiliitis) can also contribute to back pain.

In women, untreated chlamydia can lead to pelvic inflammatory disease (PID), an infection of the reproductive organs. PID commonly causes lower abdominal or pelvic pain, which some women might perceive as lower back pain. This is typically referred pain from widespread pelvic inflammation, not a direct infection of the spine or back muscles. Chronic pelvic pain is a long-term consequence of PID, and this pain can extend to the lower back area.

Serious Health Consequences of Untreated Chlamydia

Untreated chlamydia can lead to severe and lasting health complications, particularly affecting reproductive health. For women, this often means pelvic inflammatory disease (PID), where the infection spreads from the cervix to the uterus, fallopian tubes, and ovaries, causing inflammation and scarring.

This damage can result in chronic pelvic pain, infertility, and an increased risk of ectopic pregnancy, where a fertilized egg implants outside the uterus. Repeated chlamydia infections further elevate the risk of these complications.

For men, untreated chlamydia can lead to epididymitis, an inflammation of the coiled tube at the back of the testicle that stores and carries sperm. Symptoms include pain, swelling, and tenderness in the testicles, which can occasionally lead to infertility. While long-term problems in men are less common than in women, untreated chlamydia can also increase the risk of acquiring or transmitting other sexually transmitted infections, including HIV.

Chlamydia can also pose risks during pregnancy. An infected pregnant person can pass the bacterium to their newborn during childbirth, resulting in serious health issues for the baby, such as eye infections (conjunctivitis) or pneumonia. Untreated chlamydia during pregnancy has also been associated with an increased risk of premature birth and low birth weight.

Diagnosis, Treatment, and Medical Guidance

Diagnosing chlamydia is straightforward, typically involving a nucleic acid amplification test (NAAT). This highly sensitive test can be performed on a urine sample or a swab from the cervix, vagina, throat, or rectum, depending on sexual history. Because many infections are asymptomatic, regular screening is recommended for sexually active individuals, especially women under 25 or those with new or multiple partners.

Chlamydia is a curable infection, effectively treated with antibiotics. Common regimens include a single dose of azithromycin or a seven-day course of doxycycline. It is crucial to complete the entire course of prescribed medication to ensure the infection is fully eradicated. Individuals should abstain from sexual activity for at least seven days after starting treatment and until all their sexual partners have also been treated to prevent reinfection.

Partner notification is important for controlling the spread of chlamydia. Informing recent sexual partners allows them to get tested and treated, which helps prevent reinfection and reduces further transmission. Prompt medical attention and adherence to treatment guidelines are essential to prevent serious long-term complications.