This itching started a week ago. I had begun a ‘candida diet’ about a month ago. This same scenario took place about 2 years ago, after going on ‘candida diet’. I don’t remember how much time it took, but it happened the same way; went on ‘candida diet’, after a while (maybe a couple of weeks or so) the itching began and became severe on feet and groin. . . so maybe this isn't an allergy?