A papillary swelling on the male foreskin may be a normal hair follicle, or it may be a disease such as pearly rash or condyloma acuminatum. 1. A papillary swelling on the top of the foreskin of the penis may be a normal hair follicle on the top of the foreskin. Hair follicles can be distributed on the surface of the foreskin and scrotal skin, with white bumps and sometimes hair in the center, and there are usually no symptoms. 2. If there is unclean sexual contact, it may be condyloma acuminatum, commonly found around the genitals, the prepuce tie, glans, penis surface, mostly light red or dirty red bumps, cauliflower-like or corns. 3. Pearl rash is mostly distributed in the glans rim and both sides of the foreskin tie, white or reddish small bumps, related to the long foreskin, friction stimulation. Therefore, there are nipple-shaped bumps on the foreskin, it is best to go to the hospital for examination to determine the specific cause of the disease, and then give the appropriate treatment.