Is there a difference between syphilis and chancroid?

Is there a difference between syphilis and chancroid?

Syphilis and chancroid are both diseases that are spread through sex, but the germ that causes syphilis isn’t the same as the one that causes chancroid, and treatment is different.

If you have syphilis, you could have a chancre. This is a hard sore or an ulcer that usually forms where the bacteria enters your body, most often in your genital area, but also in your mouth or anus. A chancre usually doesn’t cause pain.

Chancroid is the disease, not the sore. In chancroid, you’ll have a soft chancre (ulcer). These are often painful and red. They don’t have hard edges and they may leak pus.