A member asked:

Hello,how common is it for someone to have secondary syphilis but no rash? thanks?

3 doctors weighed in across 2 answers
Dr. Hunter Handsfield answered

Specializes in Infectious Disease

As an approximation, probably 80-90% of secondary syphilis cases include skin rash. Absence of rash in someone at risk for secondary syphilis (on the basis of exposure history or other symptoms) reduces the likelihood of secondary syphilis, but certainly does not eliminate the possibility. If there is any risk or concern for syphilis, blood tests always are necessary whether or not there is a rash

Answered 8/21/2023

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It is variable depends on the invasiveness of the organism and the persons immune system. But around 40% of the people get the rash

Answered 8/22/2023

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