I use many natural Antibiotics and oxidizers including hydrogen peroxide (similar to ozone). I think these upset the balance between bacteria and fungi. so after awhile, the fungi get the upper hand.
Then I get the yeast symptoms; crazy itching between toes is worst. Time to take anti-fungals. Caprylic acid (Capryl...), coconut oil, pao d'arco bark work well.
It is very improtant not to feed your yeasts with dietary sugar. Notice how the toe crack itching and other symptoms flare after blood Sugar stimulating simple carbohydrate meals.
For help with Sugar gyrations, try glucose tolerance factor, composed of niacin, chromium, and vanadium.