摘要
To the Editor:Syphilis is a sexually transmitted disease caused by Treponema pallidum(T.pallidum).Secondary syphilitic lesions usually occur within 3 months after the initial exposure to T.pallidum.The most frequent skin manifestations of secondary syphilis are macular and papular eruptions.However,other uncommon lesions,such as nodular,pustular,arcuate,and psoriasislike lesions,have been occasionally reported.[1,2]Annular syphilitic lesions are relatively rare and usually present as multiple lesions scattered over the body or are limited to local skin such as genital.[1,3]Herein,we report a solitary annular lesion of secondary syphilis on the face.
