Burning In Mouth, Face And Body

I have been suffering for 2 years without a definitive diagnosis on these symptoms. I have undergone many tests which have not connected my symptoms with any disease or condition. At this point I just don't know where to turn to get relief. Maybe someone has experienced such symptoms and can give me direction on where to turn. First, 2 yrs ago my BP began to creep, not bad but significant enough for med. Cholesterol high as well, put me on med which caused elevated liver enzymes. Stopped med for liver after a year liver enzymes down. Through extensive blood work my ANA (auto immune antibodies) levels were high. Went to Rheumatologist ruled out Lupus, Sjorgrens, etc. Soon after starting new BP med I started experiencing burning in my mouth, tongue, roof of mouth. Now I have burning on face, throat, inside nose, legs. It has been nasty. I have been on Klonopin, didn't work, neurotin didn't work. All the meds make me have panic attacks and the burning is worse. I went off all BP med at some point thinking that's what caused the burning but I still have it even being off meds. I have had enough and am sitting here totally frustrated, anxious and at a dead end. If anyone has another idea or specialist to see. Let me know. I'm all for suggestions. I am on synthroid for hypothyroidism. Have been to Endocrinologist also. My BP is running 144/80 or so. I have tried different compositions of BP med and they all make me crazy. Doctors think its mental, but I am a totally sane, responsible person and not a lunatic.