Syphilis is a sexually transmitted infection caused by a bacteria.
You can catch syphilis through oral, vaginal or anal sex with a person who has syphilis. It is transmitted through skin-to-skin contact with an infected area.
Not all people with syphilis have symptoms so you may not know you have it unless you have a blood test for it.
Penicillin is the usual treatment for syphilis. If you are allergic to penicillin there are alternative antibiotics available.
Organisations that specialise in this area of reproductive and/or sexual health
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