You searched for: “venereal collar
venereal collar, collar of pearls, collar of Venus, leukoderma colli (s) (noun) (no pl)
Syphilitic leukoderma or a congenital skin condition characterized by spots or bands of unpigmented skin around the neck and shoulders: Venereal colla is virtually pathognomonic of late syphilis, that is decisively characteristic of a disease or indicating a disease with certainty.