Sexually Transmitted Infections in Men: Symptoms and When to Get Tested
Burning on urination, discharge, itching — or no symptoms at all while still carrying an infection. The most common sexually transmitted infections in men, what each symptom points to, the timing of testing and the window period explained.
Two opposite misconceptions dominate the subject of sexually transmitted infections (STIs). One group of men panics at every symptom, assuming a serious illness; another says "I have no symptoms, so there is no problem" and goes years without testing. The truth lies between the two — a significant proportion of these infections run silently in men, yet almost all of them can be identified and treated. This article explains what each symptom points to and when testing is meaningful.
The most common sexually transmitted infections in men
- Chlamydia: the most common bacterial STI, and it causes no symptoms at all in the majority of men. When symptoms occur, they consist of burning in the urethra and a clear or whitish discharge.
- Gonorrhoea: usually noisier; marked burning on urination and a thick yellow-green discharge are typical. It begins within days of exposure.
- Mycoplasma and ureaplasma: investigated in recurrent urethritis or where treatment has not produced a response.
- Trichomonas: mostly silent in men; may cause mild burning or discharge.
- Genital herpes: painful, clustered small blisters followed by superficial ulcers; the first episode is usually the most severe.
- HPV (genital warts): painless, flesh-coloured bumps. This is the subject of a separate article.
- Syphilis: begins with a single painless sore in the first stage; because it is painless it is often missed and heals on its own — which does not mean the infection has resolved.
- HIV and hepatitis B/C: may cause no symptoms in the early period; diagnosis is made only by blood testing.
Which symptoms require assessment?
- Burning, stinging or discomfort along the urethra on urination
- Any discharge from the tip of the penis — clear, white, yellow or greenish
- Sores, bumps or blisters on the penis, scrotum or around the anus
- Enlarged lymph nodes in the groin, painful or painless
- Testicular pain and swelling — may indicate the infection has spread upwards and should be assessed without delay
- Frequent urination, pain during intercourse, blood in the semen
- General symptoms such as fever, sore throat or rash after a risky exposure
None of these symptoms establishes a diagnosis on its own — chlamydia and gonorrhoea can produce the same picture and their treatments differ. For this reason, taking an antibiotic found online is one of the most damaging things a person can do: it suppresses the symptom temporarily, distorts test results, contributes to resistance, and the infection may continue silently.
Is testing necessary if there are no symptoms?
Yes — and this is the most important point. Chlamydia is silent in the majority of men; it can nonetheless be transmitted to a partner and, by damaging the fallopian tubes in women, become a cause of infertility. HIV, hepatitis B and syphilis may also remain symptom-free for a long time.
Testing without symptoms is recommended in the following situations: before or after intercourse with a new partner, after unprotected exposure, when an infection has been identified in a partner, at regular intervals where there is more than one partner, and before planning a pregnancy.
How is testing done and when is it meaningful?
Today the majority of diagnoses are made from simple samples:
- PCR on a urine sample: the first choice for chlamydia, gonorrhoea, mycoplasma and ureaplasma. Accuracy improves if the patient has not urinated for at least 1-2 hours beforehand and if the first urine of the day is used.
- Swab from the urethra or lesion: taken where there is discharge or a sore.
- Blood tests: for HIV, hepatitis B, hepatitis C and syphilis.
The critical concept is the window period: a test performed immediately after transmission may be negative because the virus or bacterium has not yet reached detectable levels. Broadly, a test around 1-2 weeks after exposure is more reliable for bacterial infections, and 4-6 weeks for infections screened by blood test such as HIV and syphilis; where risk is high, repeat testing at 3 months is advised. A negative test taken a day after exposure is therefore not reassuring, and the timing should be decided together with a doctor.
Treatment and partner assessment
Most bacterial infections are treated with appropriate antibiotics; in viral infections such as herpes, treatments that suppress attacks and reduce their frequency are used. Three rules are decisive: treatment must be completed in full, sexual activity should be avoided until treatment has finished and the recommended interval has passed, and the partner must also be assessed. If the partner is not treated, the infection is transmitted back and forth; this accounts for a substantial proportion of recurrent urethritis cases.
Prevention and the right approach
Condoms markedly reduce the transmission risk of most infections; however, because they do not cover the entire area of contact, protection is partial for infections spread by skin-to-skin contact such as HPV and herpes. Vaccines are available for HPV and hepatitis B and can also be given to men. Regular screening, meanwhile, is among the first steps that can be taken without waiting for symptoms.
Finally: this is not a matter for shame but a common health topic. A man who hides his symptoms delays not only his own treatment but also leaves his partner at risk. An assessment carried out with full confidentiality both shortens the process and reduces anxiety.
Assoc. Prof. Zülfü Sertkaya practises in the field of urology and andrology in Istanbul; assessment and treatment planning for sexually transmitted infections are carried out with full confidentiality.