A person who develops a rash on the hands, flu-like symptoms, and hair loss about five months after sex with a person who could have had an STI should seek treatment for a possible infection of which of the following diseases?

A rash that can affect the palms or hands, flu-like symptoms, and patchy hair loss can occur during secondary syphilis. This stage may develop weeks to months after infection, so symptoms about five months after sex could fit. The correct choice is syphilis; gonorrhea and HPV do not typically cause this combination of symptoms.

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