Syphilis is diagnosed by a combination of medical history, physical examination, looking at infected secretions under a microscope, and by blood tests. Other antibiotics may be prescribed. All patients need to be re-evaluated after treatment to be certain of cure and some patients will need to take more than one course of antibiotics. Know your partner. Your risk of getting an STD increases with the number of sex partners you or your partner has.
Lack of communication is also a factor.
Condoms used in conjunction with a spermicide containing nonoxynol-9 offer high protection against most STDs. The diaphragm and spermicides used alone offer low to moderate STD protection, while the birth control pill or IUD used alone offer no STD protection. Other Considerations Reinfection . One or more cases of a particular STD does not protect you from reinfection. Your body does not develop immunity to STDs.