One thing that is a little baffling from this article...
Psoriasis isn't a skin disease and the real cause is curable. Basically, the cells of Psoriasis sufferers can't produce enough of a key compound called fumaric acid.
What does work: Fumaric acid supplements, combined with a few dietary changes, have given astonishing results in numerous clinical studies to date. In one such study, 4 out of 5 patients saw dramatic relief, with quite a few experiencing "complete and long-lasting disappearance of lesions."
If this is the CURE, then why didn't 5 out of 5 people experience a complete and long-lasting disappearance of their lesions rather than "quite a few."
This may be a great TREATMENT, but once again, I think the term "cure" is a little much.