What I have seen for a non-traditional treatment of psoriasis is the use of "Dead Sea" products; mainly bath salts which help to clear the tissue. One is AHAVA; plain bath salt products do not appear to help & cause other issues but many have tried the ones made by AHAVA.
http://www.ahavaus.com/?gclid=CKz4yK...FQILPwodbEvEXw
If you can clear the tissue properly have a good spa do the waxing if you want to try it again. Do not do it yourself!