I have had psoriasis for 20 years - have recently got relief from taking imupro test at diskem to find out what I'm allergic to. It has not taken it away completely but has reduced it somewhat. The only way to alleviate itchiness is to keep well moisturized. Unfortunately there is no cure. If you can't take test eliminate from your diet the things you eat that cause the prosiasis to flare up. I takes time but is possible. Good luck.