My niece suffered from psoriasis and after six months of traditional treatment from her doctor with poor results and no hope for a cure, she went to a holistic practioner. She was told psoriasis was caused by a parasite. She was given a parasitic cleanse (had to drink a capful of a liquid two or three times a day) and had to eliminate sugar from her diet. She saw a huge improvement in three weeks. She is totally free of this skin condition and has never had another occurrence. That was seven years ago. She doesn't remember the name of the product, but you might talk to your local health/vitamin store for suggestions.