I've been suffering with this extremely annoying condition for a few months. I've had minor cracks a few times in previous years but only for brief periods (less than 1 week) about once a year and always following a very stressful period, but it never turned into the red sores and always went away as soon as I began taking a vitamin B complex for a few days. This time, it has not gone away in spite of taking the B complex for weeks. I don't have a Candida infection and (as far as I know) I'm in otherwise excellent health. However, I've had a series of minor illnesses this year which is very unusual for me as I'm rarely sick, in addition to on-going stress.
So I found this "cure" that bohemiatom posted and can't thank you enough for posting it. It worked after the first treatment (redness and cracks were much better) but as soon as I let up even a little, the redness gets worse. My diet consists of extremely little Sugar except if "hidden" in foods like vinaigrette dressings and the like. I avoid White Sugar /flour/pasta etc. and other foods that seem to aggravate this like the plague.
I am trying to get to the bottom of this, and following the trail of a possible vitamin B deficiency in spite of a healthy diet. Someone here recommended Biotin (which I haven't tried yet). I've also read that Angular Cheilitis is the first sign of a riboflavin deficiency, which may not necessarily be due to a low intake of the vitamin but also due to the body's inability to absorb or process it. I'm wondering if this may be the core underlying cause in my case, brought on by on-going stress and manifesting as Angular Cheilitis, and the treatment of which may cure AC altogether. But, what is it? That is still the big question over my head.
I'm wondering if anyone has taken this angle in your search to get to the core issue --- what caused AC in the first place and why is it not going away?