I have this rash on penis from few years

Hello, i have this spot on my penis from few years, it s a red spot with NO pain or bleeding ,at times it looks like a scar, at times look like a red rash.It could be cancer?because any rash that does not heal could be, i m just 19 yrs

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So, at times this could look better or worse depending on whether you recently masturbated, or perhaps took a shower and used a scented soap, or a not particularly skin-friendly shower gel.
If all 3 of these, or other circumstances were happening at the same time, then, the rash could look worse.
It is also quite common to think along the lines of ’ if this is not healing, like it normally should, and it has been there for sometime, then, this could be a sign of cancer, perhaps? ’
It may not be unusual to think like this but the facts of penile cancer for someone of your age would suggest the chances of that are almost Zero!
So, as I have already eluded to, I would suggest that certain things make this worse, try to observe when this happens and make a mental note to avoid these.
Whether you are sexually active or not, or even if and when you masturbate you apply anything to your penis, or not, you do not mention … ?