do a google search...it typically ocurs on the palms of the hands and soles of the feet but can ocur in other places also. It also can vary in appearance so don't rule it out if the pics don;'t look like yours. But most pictures I found look like a symmetrial rash of small circles (copper or reddish color). Why not go and get tested. That's the only sure-fire way to know, especially since syphilis is commonly referred to as the "great imitator" --self explanatory. I also stress that if it is a syphilis rash (which is probably isn't), you would be at the secondary syphilis stage (beyond a chanker), so you need to take appropriate treatment if it is. Do yourself a favor and just get tested...either way you will be at ease (if positive, get treated and feel better--if negative, you can really rest easy)