necklace of venus necklace of venus necklace of venus describes the white spots on the side of the neck associated with syphilis. necklace of venusother namesvenereal necklace, collar of venus, leucoderma syphiliticumspecialtydermatologycausessyphilis it is a type of leucoderma syphiliticum, appearing around six-months following the onset of syphilis. it is rare. the term was coined by jean alfred fournier in 1906.