I have what I call constant burning toothachey pain in my legs and feet. It is as if I have 3rd degree burns on my legs, and I put tight stockings on over it. My pain is not intermittent. It is there 24/7, idiopathic SFN. Sometimes feels like I am getting stung by thousands of bees over and over again. I was originally on a higher dose of pregabalin and it just wasn't keeping me sane. My neurologist finally wrote a Butran's opioid low dose patch for me three years ago and it changed my life. I have not had to increase my medication and have been stable with a level of 3 pain for the past 3 years. I can sleep thru the night and function in life---- to a point. Everyone talks about addiction, but if there is no cure for this horrible disease, how would they expect us to come off of all this stuff anyway??