Expert Q & A Answers About syphilis cure

Is a rash a common symptom of syphilis?

If I have syphilis, would I definitely develop a rash? What does a syphilis rash look like and can I get rid of it?

Is there a test for syphilis? Can it be cured?

I’m wondering about syphilis testing options, if any. I thought I got tested for all STDs when I saw my doctor the last time, but a friend told me that I have to make a point to tell my doctor that I want to get tested. What’s true? And can syphilis be cured?