i have little bumps running up the back of penis. they diminish as they reach the head of the penis. also, the line going up the back of my penis is about 8mm wide at the bottom and is a light brown colour. and the bottom of the head of penis is a dark to light purple. can you please clarify if these things are bad and what i should do to fix this. oh and under the head of my penis is a white/off-white substance that comes back after i wash it off with my hands in the bath. i don't think it's semen as it appears even when i don't ejaculate for a while. it has quite a strong smell. please help, i've had this problem for a while. it's usually in small little balls. i think it may have something to do with the skin on the head of my penis, because it looks a bit broken in some places, but i'm not entirely sure :(
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