About 4 months ago I noticed these lines of bumps on the head of my penis (have no idea how long they'd been there). They go from the back of the glans to about half way to the urethra hole. They're only on the top of the glans in the middle and gradually fade away from left to right. These bumps all line up, kinda like crop rows following the natural folds of the glans both horizontally and vertically (I can pull them apart and see 'normal' skin between them). They are slightly darker than the rest of the glans, or if I spend time looking at them (with eyes and hands) they get kinda red. At that time 4 months ago, I had an STD doctor look at a larger bump at the end of one of these rows she said "It just doesn't look like a wart to me." She spend some time looking at the glans so I'm assuming she looked at the rest of them. They haven't noticably changed over that 4 month time. I haven't had sex in over 9 months.