STD: Nonbacterial and Nonviral

Chancroid  -  A venereal disease caused by a hemophilic bacterium (Hemophilus ducreyi) and characterized by chancres unlike those of syphilis in lacking firm indurated margins-- called also soft chancre.

Gonorrhea  -  A contagious inflammation of the genital mucous membrane caused by gonococcus. Also called the clap.

Asymptomatic  -  Presenting no symptoms of disease.

Chlamydia  -  Any of a genus (Chlamydia, family Chlamydiaceae) of spherical gram-negative intracellular bacteria; especially one (C. trachomatis) that causes or is associated with various diseases of the eye andurogenital tract including trachoma, lymphogranuloma venereum, cervicitis, and some forms of urethritis.

Syphilis  -  A chronic contagious usually venereal and often congenital disease caused by a spirochete (Treponema pallidum), which if left untreated can produce chancres, rashes, and systemic lesions.

Epidemiology  -  A branch of medical science that deals with the incidence, distribution, and control of disease in a population.

Trichomoniasis  -  A human sexually transmitted disease occurring especially as vaginitis with a persistent discharge and caused by a trichomonad (Trichomonas vaginalis) that may also invade the male urethra and bladder.

Herpes  -  Any of several inflammatory diseases of the skin caused by herpes viruses clusters of vesicles; especially Herpes Simplex.