| At the turn of the century syphilis and hepatitis were also on the increase. |
| During the latent stage of syphilis, skin lesions resolve, and patients are asymptomatic. |
| More developed and extensive lesions may mimic discoid lupus, psoriasis or secondary syphilis. |
| In the 75 years before World War II arsenicals were used to treat syphilis in sub-Saharan Africa and syringe use was tightly controlled. |
| The fact that today we do not see the typical tabetic patient so often is no reason to believe that late syphilis has been eliminated. |
| After the secondary stage, some people with syphilis progress to a latent stage where they have no more symptoms. |
