<prompt> An adult male presented 4 weeks after intercourse with fever, rubbery ulcer, inguinal lymphadenopathy. Causative organism:LGVSyphillisChancroidHIV  <response>: Ans. a LGVRef: Neena Khanna Synopsis of Dermatology 4th ed.322LGV is an STD, caused by chlamydia presents classically with painless lymphadenopathy.Mnemonic to remember LGV: ABCDEFG: Asymptomatic, Bubo, Chlamydia, Doxy, Esthiomine, Fries test, Groove signDiseaseUlcerLymph nodeSyphilisPainlessPainlessChancroidPainfulPainfulLGVPainlessPainful Bubo 