I think this thread has a lot of great comments. I definitely fall into the "perfect storm" category which is my term to describe the confluence of all of the above factors -- poor diet, emotional problems, toxic overload, and recurring physical trauma (lest I leave out my year of chronic chapstick abuse following all that). I also started developing scalp Psoriasis at the exact same time of my life. I simply can't rule any of these factors out, so all I can do is address them all in a perfect storm of healing, and if nothing changes, then I might just learn to accept my psoriatic lips and move on to bigger and better things in life. Worth a shot, got nothing more to lose except time.