I tried a lot of different things, nothing seemed to help until I tried Lotrimin AF (the orange one for athlete's foot). This is 1% Clotrimazol, don't use Generic and don't use the yellow Lotrimin. Get the orange Lotrimin AF. This stuff worked like a charm. Apply 3 times a day until itch is relieved. I think I only had to do this for 3-5 days.
Other product I've used is Balneol, which helps reduce irritation a lot. It doesn't take away the itching, but it can prevent some of the irritation, which causes the itching.