General question: What products/foods are you taking on a daily basis? Sleeping medication, aspartame or other similar type of product, excess coffee, excess whatever?
Try eliminating different products for a week at a time to see if some relief is not gained. Also, instead of adding more medications, why not try topical creams such as Lidocaine, Benadryl lotion, or some other neurelief creams currently on the market? Quite possibly, some people may have experienced an unbeknownst mini-stroke? Obviously, many doctor-prescribed medications DO NOT WORK. Tests prove out nothing and much money/time is being wasted for useless drugs. Another suggestion would be to see a chiropractor and/or accupuncture specialist. Best of wishes to all and may God bless.
P.S. The more you worry, the worse your symptoms get. What a conundrum!