I found the following article related an herbal remedy for psoriasis named Neem Tree.
http://www.productosdeneem.com/neem-herpes2.htm
....United Nations has declared Neem as the tree of the 21st Century
One research study showed that when people who used the common coal tar treatment for psoriasis also took neem leaf extract internally, then their psoriasis symptoms cleared up faster. Other research reports showed that nimbidin, one of the components found in neem seed oil, has anti-inflammatory properties comparable to standard drugs like phenylbutazone (non-steroid) or prednisolone (a steroid).
Experiments and reports from patients with psoriasis suggest that taking neem leaf orally combined with a topical neem oil treatment (like baths, soap, lotion or salve) can be at least as effective as coal tar and cortisone in treating psoriasis, with none of the nasty side effects.
How does neem oil work for psoriasis?
Neem oil is a very complex natural oil that contains over 140 active ingredients. Those ingredients have a wide range of uses:
• Neem oil is a brilliant emollient, a substance that softens and moistens dry cracked skin. This straight away eliminates a lot of the irritation and itchiness. It moisturizes and protects, and heals any lesions or scaling.
• Neem also soothes the redness and irritation directly, through the steroid like effect of some of its ingredients. Yes, neem can affect your skin similar to the way steroids do, but without all the nasty side effects.
• Neem oil generally enhances skin health and the natural immunity of your skin, which is one of the biggest factors in psoriasis.
• Neem oil is strongly antibacterial, and the benefit of this for psoriasis is obvious. Neem cleans up any skin infections that may have developed because of cracked broken skin (due to dryness or scratching). When used regularly (by using a neem soap, neem shampoo, or neem lotion) neem also prevents any future skin infections that may aggravate or bring back psoriasis symptoms.
• As a bonus neem oil also prevents insect bites, another trigger that can worse symptoms. DEET, the synthetic chemical in insect repellents is a known skin irritant which would aggravate psoriasis symptoms.
• Neem leaf supports and stimulates the immune system. (Neem leaves are available as capsules, tablets, or as neem tea.) Anything that helps your immune system helps with psoriasis.
