Three-dimensional visualization reconstructed from scanned human data. Anterior view of penis with urethritis (or inflammation of the urethra) caused by gonorrhea. Often asymptomatic, gonorrhea is a common curable sexually transmitted disease caused by the bacterium Neisseria gonorrhoeae. Gonorrhea infects the cervix in women and the penile urethra in men; it can cause vaginal or penile discharge and discomfort, and may lead to pelvic inflammatory disease (PID) in women. An infection of the female reproductive tract, PID can cause scarring of the fallopian tubes and other internal organs, leading to infertility, chronic pain, and other complications.

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