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Syphilis Transmission Risk

Hello,

I am worried that I have secondary syphilis after a possible exposure and subsequent appearance of rash on both sides of bilateral hands as well as scattered circular marks on my arms and chest.  I am going to get tested on Monday but in the mean time I wanted to know a few things if I happen to test  positive.

1)  When one has secondary syphilis in what ways can they transmit the disease to others other than through intercourse or oral sex? Can a handshake if another persons skin touches one of the rashes transmit it? Can someone simply touching the rash (not an original chancre just the secondary rash) get it from that contact?
2)  Also, is kissing a form of transmission even if it is not french kissing?
3)  If I test positive for syphilis should I tell people who I have come into contact with since I first noticed this rash that they should get tested as well?

While I am not worried about being positive as I know there is a simple cure, I am worried about possible impacting others.  Please let me know and I appreciate all of your help.
3 Responses
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239123 tn?1267647614
MEDICAL PROFESSIONAL
First, prozone is rare and always was.  Second, it is rarely an issue anymore.  Initial syphilis screening now is often done by EIA, for which prozone doesn't occur.  And most labs that still do the older tests like VDRL or RPR routinely prevent it by testing the specimen in ways that prevent prozone.

Therefore, your negative test result is definitive. If your rash is continuing, you should see a doctor or clinic.  But for neither syphilis nor HIV is the cause.  In the meantime, if you have a regular sex partner you can continue or resume normal sexual relations without risk.
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Avatar universal
Thank you for your response.  My HIV and syphilis test came back negative.  I am happy with this news but had 1 more question.  I read a little but about the prozone phenomenon and just wanted to know how common it was and if I should be worried that I had a false negative 7 week after exposure?  Thank you for your help.
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239123 tn?1267647614
MEDICAL PROFESSIONAL
Welcome to the forum. Thanks for your question.

Syphilis is quite rare in the US and most industrialized countries, except in selected population groups.  Gay men account for two thirds of all cases, and most of the rest are minorities in a few cities and geographic areas.  (Syphilis is entirely absent in something like 90% of all counties in the US.)

Can you tell me more about the nature of the exposure you are concerned about and when it occurred?  Statistically, it is unlikely your rash is due to secondary syphilis.  If you have been at risk sexually (e.g., multiple partners, non-monogamous, or especially if your are man who has had sex with other men), that would raise the odds.

Given the infrequency of syphilis, it seems pointless to speculate before you even know you have it.  If your blood test is positive, there will be plenty of time to judge when and how you were infected, and whether your past sex partners need to be contacted.  I'll just say that nonsexual transmission (shaking hands, non-French kissing, etc) never transmit syphilis.

So my suggestion is that you fill in some of the gaps about your risks, and that we also wait for the blood test result -- and then take it from there.

Best wishes--  HHH, MD
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