Red spot on my penis

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Good day! can you help me what's this red spot on my penis? i had sex a week before this happened, we used condoms that time and I had this for almost a week now after i had sex and it's quite discomforting sometimes because of the little pain. can you help me treat it.

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Unfortunately it looks like syphilis rash, please see the urologist checked ASAP

thank you very much