the shaft of my penis and my scrotum are covered with very small, painless bumps. they appear to form under the skin, and are slightly lighter colored than the surrounding skin. they started to appear at puberty, and as i grew pubic hair they spread from a small cluster underneath the penis until they reached all the way around. they are contained to the area beneath the colored line near the top of the penis (where the foreskin was removed?) and have never spread above this area or to the tip of my penis. i can usually squeeze a white substance out of them if they are larger than normal. most are no more than 1mm wide, it looks like a permanent case of "goose bumps". some have hairs growing out of them, and i have a moderate amount of single, stray hairs growing in this area of my penis, more than seems normal. at the base of my penis, where the pubic hair is more clustered and there lots of friction, I usually have one or two raised, blister like bumps. they don't form chancres or anything, but if i squeeze them, they often bleed easily. i also have had these larger sores form on my penis about 3 times, usually after shaving it seems. it looks like some of my pubic hair is growing 2 hairs out the same follicle. its not episodic, it has been there since puberty. I completely shaved my pubic hair before, and never noticed lice. i never had any serious lesions or discoloration except the few times when they have grown large and infected looking, instances i've chalked up to ingrown hairs or shaving. the scarring from the large sores is extremely embarrasing and im constantly afraid it will happen again. i have recently come back from a sexually active trip to europe, and have a slightly larger red bump on my scrotum and redness at the base of my penis. i wore a condom, but considering i shaved before i left and walking a lot,creating a lot of friction, i dont know if i'm paranoid about an STD or if this is simply the same stuff. help please?