Although it is not a well-known disease, Lymphogranuloma Venereum (LGV) has become prevalent in the UK (as well as the US and Netherlands) in men who have sex with men. LGV is an STI that is common among heterosexuals in other parts of the world, such as African and South Asia.
LGV is caused by infection with L1, L2 or L3 serovars of Chlamydia trachomatis bacteria, which is passed on via sexual contact. It is a variant of the bacteria that cause the more common chlamydia. LGV can also sometimes be called Durand-Nicholas-Favre disease, lymphopathia venereum, lymphogranuloma inguinale, Tropical bubo, Strumous bubo, Climatic bubo, poradenitis inguinales.