in previous days syphilis
was dangerous one but due to new drug it is now to cure it.
positive does not mean that u have infection .
as it may be positive in other infection and autoimmune condition.
u need to confirm it by S.TPHA.
better to consult dermatologist
there are two type of patient
one is symptomatic and other one is asymptomatic.
in first one there is ulcer ,induration ,discharge and other symptom
while in second group it is asymptomatic.