Other Sexually Transmitted Diseases

Sexually transmitted diseases are common, and left untreated they can be dangerous for you and your partners. Learn about symptoms, tests, and treatments, as well as the truth behind some STD myths.
Doctor talking to patient in examination room
Signs and Symptoms of Non-Specific Urethritis
Doctor filling in gynaecological chart, close-up, mid section, elevated view
What Is Chancroid?
This is a photomicrograph of a Gram-stained urethral exudate sample from a male who presented with a case of urethritis. In this particular view, what turned out to be numerous intracellular Gram-negative Neisseria gonorrhoeae diplococci bacteria were evident. Gram-stain is a histochemical technique used by microbiologists to differentiate microorganisms into two large groups, that of Gram-negative, or Gram-positive bacteria. Gram-positive bacteria stain a dark violet-blue, for the crystal-violet stain binds to the exterior cell wall of these organisms. On the other hand, Gram-negative bacteria bind with the counterstain, in this case, the safranin or fuchsin stain. This technique is yet another method by which the trained laboratorian identifies pathogens, in order to come to a diagnostic conclusion. Image courtesy CDC/Dr. Norman Jacobs, 1974.
Non-Gonoccocal Urethritis (NGU) Treatment
concerned woman talking on cell phone
Signs and Symptoms of Trichomoniasis
Trichomonas vaginalis, illustration
What Is Trichomoniasis?