Any skin itch issues means that you are deficient in Zinc/selenium.
Take oral supplements and find a topical cream with zinc and as soon as the dificiency is over the itch will disappear.
Zinc and selenium play similar roles in the body if you are deficient in one of them your metabolism will use the other to compensate, which can easily cause a deficiency in the other if the metabolism demand is great.
Candida is prone to cause a huge need for both of them to prevent oxydation so it is advisable to suppl. with both as long as you suffer from candida.