There are small bumps on the top of the penis, you need to observe the shape and number of small bumps, if there are small bumps on the foreskin of the penis, or there are more small bumps at the coronary groove, the small bumps are in the form of cauliflower pattern or papillae, branching, consider that there may be warts, mainly based on their own whether they have had a history of bad sexual contact outside the judgment. If the bumps on the penis have not become bigger and more numerous in a short time, if they have become bigger and more numerous, it is more likely that they are acromegaly. If only the last side of the penis glans, and the place of contact with the coronary groove has a small red rash, this is a normal phenomenon, is a normal manifestation of the glans, called pearl rash, is a normal phenomenon.