gold bond medicated cream and I know it may sound funny, but also try Monostate outer itch cream. It really does work, my brother stands by that and Monostate chaffing cream also.
Forgive the spelling errors..
A powder jock itch spray should be helpful in relieving the symptoms however if the symptoms persist you may want to try an over the counter antifungal from lamasil there is a possibility that it could be attributed to a fungal infection as they are not uncommon in that region of the body. Best of Luck