Hi, well this is a bit disturbing because I have this brown patch on the shaft of my penis for a few years now. As I was very busy I didn't pay a lot of attention but since I went to the beach I was more alert about my skin's health and I wondered what I could be. I've been doing some research and it looks like a penile lentigo (which is benigne) but I wanted to confort my thoughts. TY all !
https://www.noelshack.com/2017-32-3-1502239852-20733133-10155652116607072-1202314705-n.jpg