Get some clotrimazole cream and some pure tea tree oil. Spread some clotrimazole cream on your fingertips, and mix a bit of the tea tree oil into it. Apply this on the problem areas. I think the combination of the two is best, but you could try using each individually. It seems like it is hard to get the tea tree oil to absorb into the skin when used as is, and it is hard to find a good tea tree oil cream. Showering with tea tree oil soap will help, even though these soaps typically don't have that much tea tree oil in them.
Wearing loose fitting cotton clothes will help. Avoid wearing polyester, nylon, and other synthetic fabrics that don't breathe well.