Is this syphillis or just a fly bite

hey i dont know if im posting in the right group but my last sexual encounter was around 8 months ago and few days ago these spots apeared not sure if im over reacting or ... any opinion is appriciated i dont have any no where else that i know of just on my arm i so have exzma quite bad

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Hi sara,
It’s highly unlikely to be syphilis, which has a maximum incubation period of 90 days (3 months).

It could just be an infected scratch or mild folliculitis.

Adhari