Please provide your email address to receive an email when new articles are posted on . Higher rapid plasma reagin, or RPR, titers at diagnosis and a diagnosis made in more recent years are associated ...

Panel A shows a syphilitic chancre with a clean base and heaped-up margins. Panels B and C show scaly plaque on the palm and sole, respectively, of a patient with syphilis. Panel D shows bacteria with ...

Data from a large study of syphilis indicate a high rate of neurosyphilis in HIV-infected patients with a CD4-cell count less than or equal to 350 or a serum RPR titer greater than or equal to 1:32.

Treponema pallidum, a spirochete, causes syphilis and is spread through contact with infectious lesions or body fluids. An ulcerative skin lesion, known as chancre, typically develops at the site of ...