Am having numbness and pain in both hands and legs, more in right hand.. it's there from 3 months. Got my brain MRI, which is normal. Also got tested for nerve conduction study which is also normal, all blood tests have come out normal.vitamin d is insufficient and am taking tabs from 2 months and also Presently am on pregabalin and nortriptyline tablets.. still no improvement in my symptoms.. pls suggest the way forward as am getting scared.. also after workout my legs feel number is I feel slight vibration kind of in my legs..