Chlamydia in Men: Symptoms, Testing, Treatment & Complications | Doctor-Reviewed STI Guide [2026]

• Vaginal intercourse: 30-50% per-act transmission from infected partner to urethra
• Receptive anal intercourse: Direct rectal infection risk
• Insertive anal intercourse: Urethral infection risk
• Oral sex (fellatio): Throat infection in receiver, urethral infection from infected throat
• Cunnilingus: Lower risk but documented transmission
• Sharing sex toys without cleaning: Indirect transmission possible

• Clear or white urethral discharge: Usually thinner and less purulent than gonorrhea
• Mild dysuria (painful urination): Burning or stinging sensation
• Urethral itching or tingling: Often the first symptom noticed
• Increased urinary frequency: Mild bladder irritation
• Testicular pain or swelling: Indicates progression to epididymitis
• Penile tip discomfort: Mild meatitis

The most concerning feature of male chlamydia is that up to half of infected men have no symptoms at all. These silent carriers unknowingly transmit infection to partners, where it can cause severe complications in women (pelvic inflammatory disease, infertility).

This is why routine STI screening (without symptoms) is recommended for sexually active men, especially those with new or multiple partners. A simple urine NAAT test can identify silent infection.

If symptoms occur, they typically appear 1-3 weeks after exposure, sometimes up to 6 weeks later. The relatively long incubation period means men may not connect symptoms to a specific sexual encounter.

• Acquired through oral sex with infected partner
• Symptoms: Usually asymptomatic; rarely mild sore throat, post-nasal drip
• Detection: Throat swab NAAT test (not urine)
• Significance: Reservoir for ongoing transmission via oral sex
• Treatment: Same antibiotic protocols as urethral infection

• Acquired through receptive anal intercourse
• Symptoms: Often asymptomatic; possible anal discomfort, mucous discharge, proctitis
• Detection: Rectal swab NAAT test (not urine)
• Higher prevalence in men who have sex with men (MSM)
• LGV (lymphogranuloma venereum) variant requires extended treatment

NAAT is the gold-standard diagnostic method for chlamydia with sensitivity over 95% and specificity over 99%. It detects chlamydia DNA/RNA directly, allowing diagnosis from non-invasive samples like first-catch urine. Results are typically available within 2-5 days.

• Urethral infection: First-catch urine (hold urine 1 hour before sample)
• Pharyngeal infection: Throat swab from posterior pharynx and tonsils
• Rectal infection: Rectal swab (self-collected or clinician-collected)
• Comprehensive screening: Combined urine + throat + rectum (3-site)

• If symptoms appear (urethral discharge, dysuria, testicular pain)
• After unprotected sex with new or untested partner (wait 1-2 weeks)
• If partner is diagnosed with chlamydia or other STI
• Annually for sexually active men with new partners
• Every 3-6 months for higher-risk individuals (multiple partners, MSM)

• Doxycycline 100 mg twice daily for 7 days: Now preferred first-line; superior efficacy especially for rectal infection
• Azithromycin 1 g single dose: Convenient single dose; appropriate when adherence to 7-day course is uncertain
• Cure rate: Both regimens achieve over 95% cure

• Abstain from sex for 7 days after treatment to prevent transmission and reinfection
• Treat all sexual partners from the past 60 days
• Test of cure not routinely required for uncomplicated infections; repeat testing 3 months later recommended due to high reinfection rates
• Co-infections: Test for gonorrhea, syphilis, HIV at same visit (often co-occurring)
• Pregnancy: Azithromycin or amoxicillin (doxycycline contraindicated in pregnancy)

Untreated chlamydia can ascend the urethra to infect the epididymis. Acute epididymitis presents with unilateral testicular pain, swelling, redness, and fever. In sexually active men under 35, chlamydia and gonorrhea are the most common causes. Treatment requires extended antibiotic course (10-14 days doxycycline + ceftriaxone for gonorrhea coverage). Untreated epididymitis can damage sperm production.

Chlamydia is a potential cause of chronic prostatitis/chronic pelvic pain syndrome, although this association is less established than for acute prostatitis from other bacteria.

A small proportion of patients (1-3%) develop reactive arthritis 1-4 weeks after chlamydia infection. The classic triad is urethritis + conjunctivitis + asymmetric oligoarthritis (commonly knees, ankles). Mostly affects men aged 20-40, often HLA-B27 positive. Treatment involves NSAIDs, sometimes DMARDs, and the underlying chlamydia.

Chronic chlamydia infection may reduce sperm motility and morphology. Although male infertility is less commonly attributed to chlamydia than female tubal factor infertility (very strong association), there is emerging evidence of subfertility in chronically infected men.

The most significant consequence of untreated male chlamydia is transmission to female partners, where it can cause pelvic inflammatory disease (PID), tubal infertility, ectopic pregnancy, and chronic pelvic pain. This is why partner notification and treatment are critical.