men or women?
if it is men they may appear on the penis, anus or rectum. Chancres can also develop on the mouth, tongue, lips or any other body part that has come into direct contact with an infected sore. The chancre usually lasts between 3-6 weeks and heals on its own. However, this does not mean that the infection itself has left your system and treatment is still required to kill the Treponema pallidum bacterium that causes syphilis.