Chancroid: Acute, localized autoinoculable infectious disease usually acquired through sexual contact. Caused by HAEMOPHILUS DUCREYI, it occurs endemically almost worldwide, especially in tropical and subtropical countries and more commonly in seaports and urban areas than in rural areas.Haemophilus ducreyi: A species of HAEMOPHILUS that appears to be the pathogen or causative agent of the sexually transmitted disease, CHANCROID.Ulcer: A lesion on the surface of the skin or a mucous surface, produced by the sloughing of inflammatory necrotic tissue.Genital Diseases, Male: Pathological processes involving the male reproductive tract (GENITALIA, MALE).Thiamphenicol: A methylsulfonyl analog of CHLORAMPHENICOL. It is an antibiotic and immunosuppressive agent.Genital Diseases, Female: Pathological processes involving the female reproductive tract (GENITALIA, FEMALE).Skin UlcerCalymmatobacterium: A genus of bacteria causing GRANULOMA INGUINALE and other granulomatous lesions.Lymphogranuloma Venereum: Subacute inflammation of the inguinal lymph glands caused by certain immunotypes of CHLAMYDIA TRACHOMATIS. It is a sexually transmitted disease in the U.S. but is more widespread in developing countries. It is distinguished from granuloma venereum (see GRANULOMA INGUINALE), which is caused by Calymmatobacterium granulomatis.MississippiSyphilis: A contagious venereal disease caused by the spirochete TREPONEMA PALLIDUM.Trimethoprim: A pyrimidine inhibitor of dihydrofolate reductase, it is an antibacterial related to PYRIMETHAMINE. It is potentiated by SULFONAMIDES and the TRIMETHOPRIM, SULFAMETHOXAZOLE DRUG COMBINATION is the form most often used. It is sometimes used alone as an antimalarial. TRIMETHOPRIM RESISTANCE has been reported.Fleroxacin: A broad-spectrum antimicrobial fluoroquinolone. The drug strongly inhibits the DNA-supercoiling activity of DNA GYRASE.Herpes Genitalis: Infection of the genitals (GENITALIA) with HERPES SIMPLEX VIRUS in either the males or the females.Treponema pallidum: The causative agent of venereal and non-venereal syphilis as well as yaws.Erythromycin: A bacteriostatic antibiotic macrolide produced by Streptomyces erythreus. Erythromycin A is considered its major active component. In sensitive organisms, it inhibits protein synthesis by binding to 50S ribosomal subunits. This binding process inhibits peptidyl transferase activity and interferes with translocation of amino acids during translation and assembly of proteins.