I have read (somewhere) that there is a relationship because of mercury's effects on the liver. I'm looking for the supporting information and will post it here if I find it.

I used our HART On CD computer program to generate this list of supplements that may be able to help you:

Supplements for psoriasis

You will notice that the program suggested Milk Thistle which is a well-known liver supplement. Interesting.

I hope this helps.