Syphilis is a sexually transmitted disease that is caused by the bacterium Treponema pallidum. How is the disease spread? Syphilis is spread in only one of two ways: through sexual activity, or in the ...

Syphilis, which the bacterium Treponema pallidum causes, is a form of sexually transmitted infection. There are four stages of syphilis. The infection can be serious or cause severe complications ...

During its second stage, syphilis may lead to a rash on one or several parts of the body. It most commonly affects the trunk, palms of the hands, and soles of the feet. The rash typically does not ...