Trichomoniasis is an equal-opportunity STD, as likely to infect men as women, but much less likely to cause symptoms in men. However, even if you have no symptoms, if you are infected, you can infect your sexual partner.
Trichomonas vaginalis, a single-celled bacterium, can lodge in the urethra, the bladder, or, less often, the prostate. Sometimes it can cause a frothy or pus- like discharge and painful or frequent urination, especially early in the morning. Other symptoms may include mild irritation of the urethra and moisture at the opening of the penis. In rare cases, the epididymis, the cordlike structure behind each testicle, also may be infected with the bacterium, causing pain in the testicles.
If your doctor suspects that you may have trichomoniasis, he or she may want to examine secretions from your penis that you collect ﬁrst thing in the morning before urinating. You may also be asked for a urine specimen.
Trichomoniasis in men will usually respond to treatment with antibiotics within a week. It is important to wait until the disease is cured before having sexual intercourse because this infection spreads easily.