Okay :) i will try this cream and i hope it works for me.. Thanks for your opinion.
It sounds like yeast (jock itch), but you have let it go a long time.
It is also possible to get psoriasis there. You should see a urologist and find out what's going on. I do not think dermatologists are usually much help. Particularly I do not like the steroid creams that dermatologists love so much. Many guys have complained of the skin thinning there, and it doesn't come back. So try Lotrimin cream as directed on the tube, and if it helps, finish out a two-week course. You should throw out all your underwear or at least wash them in hot water with baking soda to kill the yeast. Do your socks in too in case you have the same fungus of the feet (athlete's foot). People pass it back and forth between these sites.