JOCK ITCH AND RASHES - SKIN DAMAGED.

Doc, Initially 2-3 years back I used to get jock itch might be bcoz i am a sportsman and my jock used to get sweat and I was using Candiderma-B cream for this... But due my rashes and itching was common. So I visited skin doctor. They told, bcoz of candiderma regular usage, my jock skin cells are damaged and he suggested some tablets and given Amonext cream instead of Candiderma. But my question is still I feel my jock skins are getting damaged further and there is no reduction in jock itching. I use half cetrizine tablet when ever I get jock itching...Now without cetrizine and Amonext cream I feel discomfort all the time. What you suggest me to do? I need to come out from this please. Jock itching at work area is really irritates and how can I lead a good life like before?