Gonorrhea and Infertility: What You Need to Know

Gonorrhea is a sexually transmitted infection (STI) caused by a bacterium called Neisseria gonorrhoeae — a Gram-negative diplococcus that thrives in warm, moist areas of the body such as the urethra, cervix, rectum, throat, and eyes. It is one of the most common STIs worldwide and is transmitted almost exclusively through sexual contact.

Another bacterium, Chlamydia trachomatis, can cause a similar STI and often co-infects alongside gonorrhea, which is why treatment typically covers both at the same time.

In Women

Gonorrhea is often called a "silent" infection in women because roughly 50% of infected women show no symptoms at all. When symptoms do appear, they may include:

• Increased or unusual vaginal discharge (watery, creamy, or slightly green)
• Pain or burning during urination
• Bleeding between periods, especially after sex
• Pelvic or lower abdominal pain
• Pain during sexual intercourse

The absence of symptoms is particularly dangerous because it allows the infection to silently progress to more serious complications without the woman ever knowing she is infected.

In Men

Men are more likely to notice symptoms — approximately 90% of infected men develop them. Common signs include:

• A burning or painful sensation during urination
• White, yellow, or green discharge from the penis
• Pain or swelling in one testicle
• Redness or swelling at the tip of the penis (less common)

Because men usually develop symptoms, they tend to seek treatment earlier — which is one reason gonorrhea-related infertility is less common in men than in women.

Gonorrhea spreads through:

• Unprotected vaginal, anal, or oral sex with an infected person
• Mother to newborn during childbirth, which can cause an eye infection in the baby (ophthalmia neonatorum)

It is not spread through casual contact — hugging, sharing food, shaking hands, or sitting on toilet seats will not transmit gonorrhea.

Risk increases with multiple sexual partners, inconsistent condom use, a previous STI diagnosis, and being under 25 years of age (the group with the highest infection rates globally).

Stage 1 — Cervical Infection

When a woman is infected, N. gonorrhoeae first attaches to the cells of the cervix (the narrow passage connecting the vagina to the uterus). At this stage, the infection is localised and can still be completely cleared with a course of antibiotics. The problem is that about half of women at this stage have no symptoms, so they never seek treatment.

Stage 2 — Pelvic Inflammatory Disease (PID)

If the infection at the cervix goes untreated, the bacteria ascend upward through the uterus into the fallopian tubes, ovaries, and pelvic cavity. This triggers a condition called Pelvic Inflammatory Disease (PID) — widespread inflammation of the upper reproductive organs.

Strikingly, up to 50% of women with PID also have mild or no symptoms — meaning the damage can progress entirely unnoticed. PID causes swelling, pus formation, and the beginning of tissue damage in the fallopian tubes.

Stage 3 — Scarring and Infertility

As PID resolves (treated or untreated), the inflammation leaves behind scar tissue and adhesions in the fallopian tubes. This scarring can:

• Partially or completely block the fallopian tubes, preventing sperm from reaching an egg
• Damage the tiny hair-like structures (cilia) inside the tubes that move the egg along
• Increase the risk of ectopic pregnancy (where a fertilised egg implants inside the tube instead of the uterus) by 6–10 times

Men can also develop gonorrhea-related fertility problems, though it is less common. The pathway is similar: the infection starts in the urethra and, if untreated, ascends to the epididymis — the coiled tube behind each testicle where sperm mature and are stored.

This causes epididymitis (inflammation of the epididymis), which can lead to:

• Scar tissue that blocks the epididymal duct (obstructive azoospermia)
• Low sperm count (oligospermia)
• Reduced sperm motility
• Sperm DNA damage from inflammation

Because men typically notice symptoms and seek treatment sooner, the infection rarely progresses this far, but it is still a real risk when left untreated.

Both gonorrhea and PID are treatable. The key is catching them early.

Current guidelines recommend dual antibiotic therapy to cover both gonorrhea and potential chlamydia co-infection:

• Ceftriaxone 500 mg by injection (single dose)
• Azithromycin 1g orally (single dose) or Doxycycline 100 mg twice daily for 7 days

PID requires a longer, more aggressive course — often 14 days of antibiotics, and hospitalisation in severe cases (high fever, vomiting, abscess, pregnancy, or failure of outpatient treatment).