Hello and welcome to HCM. Thank you for your query. I appreciate your concern to learn more, and your conclusion on the google information. Which I cannot deny. A chancre (in case of syphilis) would be more like an open sore, as described to you by your doctor. But the presence of a bump, on the penis should not be concluded as folliculitis thsi early. Testing would be required, but not for diseases like syphilis or HIV, but for diseases like herpes or HPV (humanpapilloma virus). I do not deny the fact that this could simply be folliculitis or an ingrown hair as well, but the worst will have to be ruled out, which is why I suggest screening for all sexually transmitted diseases, especially if you do not experience an improvement from treatment advise given for folliculitis. 6 months of testing after exposure to a HIV-infected individual, or needle, etc is quite sufficient to diagnose HIV with the oraquick test. Although not completely accurate, we should not have to worry about HIV as of now, as it seems unlikely. But for your satisfaction, you could include HIV testing during your screening of sexually transmitted infections, when you visit the clinic/hospital. I assume it goes without saying, please abstain from all forms of sexual contact in the mean time. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://doctor.healthcaremagic.com/doctors/dr-shoaib-khan/64581 . I would gladly help you. Best wishes.