Hello, I can understand your concern for the red bump over the penile area. I have diligently gone through your complete query and noted your concern. After thoroughly analysing all the pictures let me reassure you first that the bump appears to be simple folliculitis. It doesn t appear to be any Sexually transmitted infection. To tell you simply : our skin has hair roots along with oil glands attached to it. Whenever there is any minor friction to hair root or blockage of pore is there then the root along with the oil glands van get inflamed thus giving a red bumpy appearance. The most important point is overnight appearance of the bump. This happens only in folliculitis rather than any Sexually transmitted infection. In herpes we find mutiple small blisters which are very painful a nd within 1 day becomes ulcers. In molluscum contagiosum we find whitish or pale bump with central indentation but it takes multiple weeks to reach to present size which is visible in pictures. In my patients with your kind of problem, I suggest them to apply an antibacterial cream such as Mupirocin or fucidin cream over the affected area. An anti-inflammatory tablet such as paracetamol or ibuprofen can be taken for once or twice a day for three days. If in the next 24 hours you feel that it is increasing or becoming more painful then an antibiotic tablet is necessary. I further suggest you to not to touch or pinch or pop the area as can get more infected. Wear lose cotton clothes and cotton undergarments to be changed twice a day. Maintain a good hygiene and avoid heat and humidity. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Iven Romic Rommstein, General Surgeon