Um, er, how do I say this?
A little fungus called Tinea spp is responsible for athlete's foot, jock itch, and well, that stuff can occasionally bother other parts of the body too. I've become knowledgeable about it due to my old gym which I just quit. Tinactin, in the blue can, is for jock itch (red can's for feet and I've not tried that, I use the blue can on my feet) and you might try that .... it may be a real thrill to spray it right on little Willie, you may try spraying on your fingers then apply if that's too much. Yes it will make your willie white and not great to look at but the relief should be immediate.
Bio-guys it turns out get all kinds of problems with well, look up "monkey butt". It's due to all those parts hanging out there, movement, chafing, sweating, etc. Use of a powder of some type is very common it turns out. There's even a "monkey butt" powder lol.
This is just another part of becoming a man .....