I have plaque psoriasis and after 2 years with it I used Clobex spray and it really cleared my skin well. I've used it once (for 2 weeks) and now my skin is irritated again. I want to use it again, but I'm worried about how often I should use it? How long a break I should take in between uses? I read a peer-reviewed paper on Clobex spray and there have been no studies done for intermittent use. Anyone have any experience/suggestions? Thanks!