Hi cw2180 - In "Optimal Wellness" Dr. Ralph Golan states that "From the perspective of nutritional medicine, eczema is often the manifestation of a food allergy. It may also be the result of an intestinal yeast overgrowth, intestinal toxicity, or a deficiency of essential fatty acids and zinc."
For psoriasis he says "There is no known cause for this ailment. It is felt to be partially linked to to an imbalance in natural biochemicals in the body that regulate cell division . . . . Circulating toxins from a toxic bowel and free radicals have also been implicated . . . . Cleansing the colon is essential."