Sexually Transmitted DiseaseYunhua Deng1 DefinitionThe term STD refers to a largegroup of disease syndromes thatcan be transmitted sexuallyirrespective of whether thedisease has genital pathologicmanifestations.1 Classicvenereal diseaseModernvenereal disease syphilisnongonococcal urethritiscondyloma gonorrheaacuminatum (CA)genital herpesAIDSbacteritic vaginitishepatitis B chancroid(soft chancre) lymphogranulomavenereum granuloma inguinale1 DiseasesPathogensSyphilisTreponema pallidumNeisseria gonorrhoeaeChlamydia trachomatisUreaplasma urealyticumHuman papilloma virusGonorrheaNongonococcalurethritisCondylomaacuminatumGenital herpesAIDSHSV-/HIVCandidaGenital candidiasisBacteritic vaginitisGartners bacillusAnaerobic bacteriaSarcoptes scabieiScabiesMolluscum contagiosumM.C virus1 Epidemiology1