-Tricomoniasis. ” It is exclusively an infection of genital impact, most patients have no discomfort and when they appear are burning during urination and irritation of genitals, with occasional presence of clear discharge with a bad odor in women , ” said De la Torre. “Trichomonas often cause vulvovaginistis and, to a lesser extent, balanitis or urethritis” adds Martin.

* See how other STDs affect the skin.