Can Syphilis Cause Infertility in Men and Women?

Syphilis is a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum. If left untreated, this infection can progress through various stages, potentially leading to serious health complications affecting multiple organ systems. This article aims to clarify the relationship between syphilis and its potential impact on fertility in both men and women.

How Syphilis Affects Fertility

Untreated syphilis can significantly impair fertility through distinct biological mechanisms in men and women. In females, the infection can ascend into the upper reproductive tract, leading to pelvic inflammatory disease (PID). PID is an infection of the uterus, fallopian tubes, and ovaries, causing inflammation and scarring. This scarring can block or damage the fallopian tubes, hindering egg transport and fertilization. The risk of such damage increases with the duration and stage of untreated syphilis.

In males, syphilis can cause inflammation of the epididymis (epididymitis) or the testicles (orchitis), especially in later stages. The epididymis stores and transports sperm; inflammation here can scar and block sperm ducts, preventing release. Orchitis directly impairs sperm production and quality. Prolonged inflammation from these conditions can permanently damage sperm-producing tissues or obstruct pathways, reducing male fertility.

Identifying Syphilis as a Cause of Infertility

Determining if syphilis contributes to infertility involves a thorough medical evaluation. A healthcare professional takes a detailed medical history, including sexual health, and conducts a physical examination for signs of syphilis. Blood tests are essential for diagnosis, including non-treponemal tests like RPR (Rapid Plasma Reagin) and VDRL (Venereal Disease Research Laboratory) for initial screening.

If non-treponemal tests are reactive, confirmatory treponemal-specific tests like FTA-ABS (Fluorescent Treponemal Antibody Absorption) or TP-PA (Treponema Pallidum Particle Agglutination) are performed. Beyond confirming the infection, assessing reproductive organ damage is important. For women, this may involve imaging like hysterosalpingography to check fallopian tube patency. For men, a semen analysis evaluates sperm, and imaging assesses epididymal or testicular damage.

Treating Syphilis and Its Impact on Fertility

Syphilis is a curable infection, primarily treated with antibiotics, most commonly penicillin. Dosage and duration depend on the infection stage. Early-stage syphilis requires a single intramuscular dose of penicillin G benzathine. More advanced stages, like late latent or tertiary syphilis, may require multiple doses over several weeks.

Prompt treatment can halt the progression of the disease and prevent further damage to the reproductive organs. For instance, treating the infection can resolve inflammation in the fallopian tubes or epididymis, potentially preserving fertility. However, while treatment cures the infection, it may not reverse existing structural damage, such as severe scarring in the fallopian tubes or blocked sperm ducts. Therefore, the potential for fertility improvement after treatment largely depends on the extent of damage that occurred before therapy was initiated.

Preventing Syphilis and Protecting Fertility

Preventing syphilis is the most effective way to safeguard reproductive health and avoid syphilis-related infertility. Consistent and correct use of condoms during sexual activity significantly reduces transmission risk. Condoms act as a physical barrier, preventing contact with infectious sores and fluids. Avoiding multiple sexual partners or maintaining a mutually monogamous relationship with a tested, uninfected partner can lower exposure risk.

Regular STI screening is a preventive measure, especially for sexually active individuals or those with new partners. Early detection and prompt treatment prevent the infection from progressing to stages that cause severe reproductive organ damage. Open communication with sexual partners about STI status and practicing safer sex behaviors are key to a comprehensive prevention strategy.