Hi, I never experienced any anxiety my entire life, to be honest don't know what it is. But since I've developed diabetes, my thyroid removed, I experience a severe nervous condtion. Don't know if it's anxiety or something else. Feels like my body is being electrocuted or I drank 50 cups of coffee, an overdose of caffeine, but I don't drink caffeine. I'll tense up really bad, all my muscles will get severly tight, occassionally my chest will hurt, from muscle tightness, other then that no pain, just super tight/stiff all over my body. The sensation comes and goes, someday's better then others, but the nervous condition is alway's there. Symptom is driving me nuts, I have no idea, what's causing. Diabetic/hormone leves in normal range. Appears my body is deficient in vitamins or something. Seems to cycle every few weeks, like nervous condition for 3 weeks, then disappear for 3 weeks, then return. I tried Cyclobenzaprine to reduce muscle tightness, stiffness, tension, but all med does is knocks me out, upon waking nothing changed. Has anyone experienced, unexplainable nervous condition ? causing tight/stiff muscles. What relieved, etc.... Thanks for any assistance.