Urethritis: Causes, Symptoms, and Treatment

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Burning during urination and discharge from the urethra are uncomfortable symptoms that often send someone to a clinic – and the diagnosis is frequently urethritis. Defined as inflammation of the urethra, the tube that carries urine from the bladder to the outside, it is most commonly caused by sexually transmitted infections, though non-infectious causes exist too. The CDC STI Treatment Guidelines classify urethritis as gonococcal or non-gonococcal, with chlamydia being the leading identified non-gonococcal cause. Urethritis is common, treatable, and nothing to be ashamed of – the important step is getting evaluated and tested.

What Urethritis Actually Is

Urethritis is inflammation, irritation, or infection of the urethral lining. It produces a characteristic clinical picture: dysuria (painful urination), urethral discharge, urethral itching, and sometimes meatal redness. The condition overlaps with UTI in men, but urethritis is anatomically more localized and typically has different causes and treatment. It can affect people of any sex, though the classic discharge-and-burning presentation is most often recognized in men because the male urethra is longer and symptoms are more noticeable.

Categorically, urethritis is divided into gonococcal urethritis caused by Neisseria gonorrhoeae and non-gonococcal urethritis (NGU) caused by other organisms. A substantial share of NGU cases involve Chlamydia trachomatis. Other contributors include Mycoplasma genitalium, Trichomonas vaginalis, herpes simplex virus, adenovirus, and occasionally Ureaplasma species. In many NGU cases no single organism is ever identified, which is normal and does not change the need for treatment.

Causes and Risk Factors

Sexual transmission accounts for the majority of infectious cases. Unprotected vaginal, anal, or oral sex with an infected partner transmits the responsible pathogens. Multiple partners, a new partner in the previous 60 days, and partners with known STIs all elevate risk.

Non-infectious causes include irritation from spermicides, latex sensitivity, urinary catheterization, urethral instrumentation, and chemical irritants in soaps or hygiene products. Reactive arthritis (formerly Reiter syndrome) can produce a sterile urethritis as part of a triad with conjunctivitis and arthritis.

According to CDC STI surveillance, the picture has shifted in recent years. After a long climb, reported gonorrhea cases have declined for three consecutive years, with roughly 543,000 cases reported in 2024 (provisional data released in 2025). Chlamydia remains the most commonly reported notifiable STI in the U.S., with about 1.5 million cases reported in 2024, also down modestly. These are reported cases and likely undercount true infections, since many chlamydia infections are asymptomatic – especially in women, while symptomatic urethritis occurs in a large share of infected men. Treat these figures as directional and verify the latest year on the CDC site.

Symptoms to Watch For

Classic symptoms include burning during urination, urethral discharge that may be clear, white, yellow, or green, urethral itching or tingling, increased urinary frequency, and meatal redness or swelling. Symptoms typically appear 1-14 days after exposure – earlier for gonorrhea (often 2-5 days) and later for chlamydia (often 1-3 weeks).

Gonococcal urethritis tends to produce more profuse, purulent (yellow-green) discharge with more severe symptoms. Non-gonococcal urethritis often presents with milder, more mucoid discharge or sometimes only mild dysuria. Many people with chlamydia have minimal or no symptoms despite carrying the infection, which is why testing after a possible exposure matters even if you feel fine.

Complications of untreated urethritis include epididymitis, orchitis, prostatitis, urethral stricture, reactive arthritis, and onward STI transmission. Disseminated gonococcal infection, while uncommon, can cause skin lesions, joint inflammation, and tenosynovitis – a medical emergency requiring IV antibiotics.

When to seek emergency care: Go to the nearest emergency room or call 911 if you experience high fever, severe joint pain, skin lesions alongside urethritis symptoms, severe scrotal pain or swelling, or signs of systemic illness, as these can indicate disseminated infection or complicated urinary tract involvement.

How Urethritis Is Diagnosed

Diagnosis combines a clinical exam with laboratory testing – it is not something to self-diagnose. The provider examines the urethra, looks for visible discharge (sometimes by gently stripping the urethra from base to tip), and assesses for related findings like scrotal tenderness or rash.

Laboratory testing relies on nucleic acid amplification testing (NAAT) for Chlamydia trachomatis and Neisseria gonorrhoeae, performed on a first-void urine sample or urethral swab. Mycoplasma genitalium NAAT testing is increasingly used in cases of persistent or recurrent symptoms despite standard treatment, given growing recognition of its role and its drug resistance.

Gram stain of urethral discharge showing gram-negative intracellular diplococci provides a rapid presumptive diagnosis of gonorrhea, though NAAT remains the gold standard. Urinalysis may show pyuria but is less specific. A urine culture is sometimes added to assess for typical UTI organisms when the picture is unclear. Because guideline-recommended antibiotics change as resistance evolves, testing also helps public health track resistant strains.

Treatment Options

Treatment is prescriber-directed and often started empirically at the time of diagnosis to cover the most likely organisms while test results are pending. The regimens below reflect current CDC STI Treatment Guidelines and are shown for general understanding only – they are not a self-treatment plan, and doses must be prescribed and given by a clinician (some are injections). Antibiotics for STIs are not available over the counter in the U.S.

• Gonococcal urethritis: ceftriaxone as a single intramuscular injection (a higher dose for people weighing 150 kg or more), with doxycycline added for 7 days if chlamydia coinfection has not been excluded.
• Non-gonococcal urethritis (chlamydia or unknown): doxycycline for 7 days is preferred, with azithromycin as an alternative in certain situations.
• Mycoplasma genitalium: a two-step approach (often doxycycline followed by moxifloxacin), because of high resistance to azithromycin. Resistance-guided therapy is preferred when testing is available.
• Trichomonas: metronidazole, with the specific regimen chosen by the clinician.

Sexual partners from the previous 60 days should be evaluated and treated to prevent reinfection. Patients are generally advised to abstain from sex for about 7 days after treatment is completed and until all partners have been treated. Repeat NAAT testing about 3 months later is recommended because of high reinfection rates. Finish the entire prescribed course even if symptoms improve early.

Antibiotic resistance, particularly in N. gonorrhoeae, has driven repeated changes in CDC treatment guidelines. The current ceftriaxone-based approach replaced earlier dual-therapy regimens and is reviewed periodically – another reason to rely on a clinician using up-to-date guidance rather than older advice or leftover antibiotics.

Prevention

Consistent and correct condom use during vaginal, anal, and oral sex is the primary prevention strategy. Limiting the number of sexual partners, knowing partners’ STI status before unprotected sex, and routine STI screening for sexually active people reduce risk substantially. The CDC recommends at least annual screening for chlamydia and gonorrhea in sexually active men who have sex with men, and screening in others with new or multiple partners.

Pre-exposure prophylaxis (PrEP) for HIV does not protect against gonorrhea or chlamydia – these still require condoms and screening. Doxycycline post-exposure prophylaxis (doxy-PEP) taken after sex has emerged as a bacterial-STI prevention strategy for some at-risk populations, with CDC guidance finalized in 2024 supporting its selective use in specific groups. Whether doxy-PEP is appropriate for you is a conversation to have with a clinician.

Routine men’s preventive screenings often include STI testing for sexually active patients, and broader awareness of medical conditions related to sexual health helps reduce stigma and support timely testing.

When to See a Doctor

Any symptoms of urethritis – burning urination, discharge, itching – warrant prompt medical evaluation, ideally within a few days. Same-day or urgent care is appropriate for fever, severe pain, scrotal swelling, joint pain, rash, or systemic illness suggesting a complicated infection.

Persistent symptoms despite a full course of treatment, or recurrent urethritis after an initial cure, suggest reinfection, antibiotic resistance, or an alternative pathogen such as Mycoplasma genitalium requiring different antibiotics. Most cases of “treatment-resistant” urethritis are actually reinfection from an untreated partner, which is why partner treatment is so important.

Frequently Asked Questions

Can urethritis go away on its own?

Symptoms can wax and wane, but an underlying infection typically persists without treatment. Untreated urethritis can lead to epididymitis, prostatitis, urethral stricture, and onward transmission. Antibiotic treatment prescribed by a clinician is the standard of care.

How long until antibiotics work?

Symptom relief usually begins within 2-3 days of starting appropriate antibiotics. Full resolution of discharge and dysuria takes about 5-10 days in most cases. Persistent symptoms after a complete course warrant reassessment and consideration of resistant organisms.

Do I have to tell my partner?

Yes. Sexual partners from the previous 60 days need testing and treatment to prevent reinfection and protect their own health. Many health departments offer expedited partner therapy (EPT), where a partner can sometimes be treated without an exam, depending on local rules and the infection involved.

Can I get urethritis without sex?

Yes, though less commonly. Catheterization, instrumentation, irritants, allergic reactions, and reactive arthritis can all cause non-infectious urethritis. Urinary tract bacteria can occasionally cause urethritis as part of a broader UTI. A clinician can help sort out the cause.

The Bottom Line

Urethritis is most often a sexually transmitted infection that responds well to targeted, prescriber-directed antibiotics. Distinguishing gonococcal from non-gonococcal cases through NAAT testing guides accurate treatment, and partner therapy plus repeat testing at about 3 months prevents reinfection. Anyone with new urinary burning or discharge should be tested rather than waiting it out – both for their own health and to avoid spreading curable infections to others.

Sources

• CDC – STI Treatment Guidelines, Urethritis and Cervicitis: cdc.gov/std/treatment-guidelines
• CDC – Sexually Transmitted Infections Surveillance (2024 provisional data, released 2025): cdc.gov/sti-statistics
• CDC – Guidelines for Doxycycline Post-Exposure Prophylaxis (Doxy-PEP), 2024: cdc.gov
• MedlinePlus – Urethritis (U.S. National Library of Medicine): medlineplus.gov