Sexually Transmitted Diseases (STDs) Slideshow Pictures Impotence (ED) Slideshow Pictures Take the Quiz on STDs Trichomoniasis: Infection with trichomonas, in humans with Trichomonas vaginalis. From Healthy Resources STDs and Urinary Tract InfectionsDo I Really Need to Take HIV Medicines Every Day?I Have HIV and I'm Getting Older Featured Centers When Prostate Cancer SpreadsEssential Tips to Manage DiabetesWhat Is Cystic Fibrosis? What Causes It? Health Solutions From Our Sponsors Kept Your Wisdom Teeth? Therapy at Home?