Mel, I am idiopathic and I smoked for 8 years when I was young. I quit 26 years ago. I believe people when they say that pn is not caused by smoking. Smoking does, however, cause vasoconstriction and that could add insult to injury to an already stressed nerve. However, I stuggle with a weight problem (also stresses the system), so I am predisposed to feel kindly towards people who have a flaw or two. We are survivors, not superwomen (or men). Here's to loving all who have human frailties.