HI there, I began to experience the same things. About a year ago, I had a bout with heart palpitations which subsided and returned in January of this year. I have been to every doctor from the cardiologist (2 of them), neurologist, allergist, dentist etc. I ve has CT scans, MRIs and Xrays. Every doctor have told me that there is nothing wrong with me. Overtime, I have developed dizziness, stiff neck, tingling scalp, pain in left arm etc. But my doctors say NOTHING IS WRONG. Lately I began feeling a burning sensation on the left side of my chest. It comes when it feels like and lasts a very long time. I m tired of complaining to doctors just to be told that it many be all in my head and I will just have to live with it. I dread everyday thinking it s my last. If anyone finds a diagnosis, please share.