Atypical presentation of secondary syphilis: annular lesions in an elderly patient

Abstract

ABSTRACT Syphilis is a chronic bacterial sexually transmitted infectious disease caused by Treponema pallidum. Different age groups are affected by heterogeneous clinical forms of the disease. We report a case of atypical secondary syphilis in an elderly patient with diffuse annular erythematous lesions on the chest, back, upper and lower limbs diagnosed by histopathological, immunohistochemical and serological tests.

Keywords

• Syphilis
• Cutaneous syphilis
• Rash
• Treponema pallidum
• Infection