Likely diagnosis: Urethritis
Pain or burning in the urethra that is worse specifically during urination (dysuria), often with a "stinging" sensation or discharge from the tip of the penis, is the classic presentation of urethritis - inflammation of the urethra, most commonly caused by a sexually transmitted infection - Campbell Walsh Wein Urology, p. 2353.
Common causes
- Gonococcal urethritis - Neisseria gonorrhoeae (often causes purulent/thick discharge)
- Non-gonococcal urethritis (NGU) - most often Chlamydia trachomatis (15-40% of cases) or Mycoplasma genitalium (15-25%); less commonly Trichomonas vaginalis, herpes simplex virus - Campbell Walsh Wein Urology, p. 2358
Non-infectious causes (irritation, catheter trauma, chemical irritants) are possible but far less common than STI-related causes, especially if there's any discharge, recent new/unprotected sexual contact, or discomfort that lingers between urinations.
How it's diagnosed
A clinician typically confirms it with:
- Exam for urethral discharge
- Urine test or urethral swab (NAAT - nucleic acid amplification test) to identify gonorrhea, chlamydia, or Mycoplasma genitalium specifically
- This step matters because the antibiotic choice depends on which organism is responsible
Treatment ("the cure")
This is a bacterial infection in most cases, and it is curable with the right antibiotics - but self-treating without a diagnosis is not advised, since the wrong drug won't clear the infection and untreated urethritis can spread to cause epididymitis, prostatitis, or orchitis - Campbell Walsh Wein Urology, p. 2358.
Per the most recent evidence-based guideline (German STI guideline, 2025, PMID 39822084):
- Suspected gonococcal urethritis: ceftriaxone (single injection), typically combined with doxycycline to also cover possible chlamydia co-infection
- Suspected non-gonococcal urethritis: doxycycline for about 7 days is first-line
- Azithromycin is used as an alternative when doxycycline can't be taken
Additional important points:
- Sexual partner(s) from the last 60 days should also be tested/treated to prevent reinfection ("ping-pong" transmission)
- Avoid sex until treatment is complete and symptoms resolve (and partner treated)
- If symptoms don't improve within a week of treatment, follow-up testing is needed - there may be a resistant organism (e.g., resistant Mycoplasma genitalium) or a different cause entirely
Bottom line: This needs a proper in-person evaluation with a urine/swab test to identify the exact organism, then a short course of antibiotics (ceftriaxone and/or doxycycline are the standard first-line options). I can't prescribe treatment directly - please see a physician, urologist, or sexual health clinic for testing and the correct antibiotic prescription, ideally within the next few days given the active symptoms.