Hi Sally, I haven't been here nor posted here in a while but I was lurking and had to reply to this.

My sister (and cousin) both have very severe psoriasis so I've spent some time looking into treatments for it, and I know exactly what a pain in the @*#$ it is.

As Pat said (Hi Pat!), sun exposure helps both my sister and cousin too. You can get a series of UVB treatments prescribed by your doctor, but that would probably be pretty costly, I'm guessing. There are, however, loads of sites on the net which sell home UVB lamps, which I don't think are all that expensive. I think my sister got hers on eBay.

Also, my sister found that the range of hemp products sold by the Body Shop were very helpful (I am Australian, but I'm pretty sure the range would be available worldwide). See this link : http://www.thebodyshop.com/bodyshop/...yId=cat1010003

Of course, there's also the heftier drugs (eg Methotrexate, Cyclosporine) which are prescribed for severe psoriasis which hasn't responded to other treatment, but it's my understanding that doctors (dermatologists) will mostly initially prescribe topical creams containing cortisone or salicyclic acid.

Hope this helps!