I am with Grace on this one entirely.
Pacha - this sounds nothing like Syphillis - so please don't alarm someone in this way.
HSV is a more likely culprit in terms of transmission, but there is an unsufficient amount of detail here to give any serious advice.
The only peice of advice I can give you is that you and your wife should go to your local GUM clinic or doctor and have some routine testing. This is the only way to know for sure.
Hope this helps
this does not sound at all like syphilis.
what testing has your wife had done so far?
you can contract hsv1 from receiving oral sex but the risk of such is low. you haven't described anything that sounds like genital hsv1 going on.
grace
That sounds like syphillis not sure but you should go to a doctor and check it out