Have him try an anti-fungal for jock itch. He could just have jock-itch :)
Thank you for your help, I appreciate it :)
You may need a prescription strength one if it's not going away. The doctor can also prescribe something like diflucan which is a pill as well that helps clear it right up. Make sure you both continue treatment till its gone.
My hubby had one once and the doctor gave him a topical cream to put on it, so I presume if you buy a cream at the store it should work the same