A month back I had unprotected sex. After sex irritation started above the penis shaft area. Then this acne sort of thing developed with black centre developing later. What STD is it a sign of?
Don't know how to attach image file so gave Google Drive links to image.
https://drive.google.com/open?id=0B97ZWAuDdA-nRXg0eUROZ1JQZmRwdEkxc2lqNXBET0pSaWJN&authuser=0
https://drive.google.com/open?id=0B97ZWAuDdA-nNUtjQTNqLTBjMXc&authuser=0